Search references for APPLICATION LEVEL-GATEWAY. Phrases containing APPLICATION LEVEL-GATEWAY
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Security component that augments a firewall or NAT employed in a computer network
An application-level gateway (ALG, also known as application-layer gateway, application gateway, application proxy, or application-level proxy) is a security
Application-level_gateway
Type of firewall in computing
circuit-level gateway is a type of firewall. Circuit-level gateways work at the session layer of the OSI model, or as a "shim-layer" between the application layer
Circuit-level_gateway
Branch of computer security
application level. A network packet is forwarded only if a connection is established using a known protocol. Application-level gateways are notable for
Internet_security
Maintaining connections across network address translators
connections across gateways that implement network address translation (NAT). NAT traversal techniques are required for many network applications, such as peer-to-peer
NAT_traversal
Mechanism to allow IPv6 hosts to communicate with IPv4 servers
connections. For SIP and FTP, the problem can also be solved using an application-level gateway, or using Port Control Protocol with the PREFIX64 extension. Jool
NAT64
Topics referred to by the same term
in Africa Anti-lymphocyte globulin, an immunosuppressive drug Application-level gateway, in computer networking A-League, a domestic football league in
ALG
Standard protocol for transferring files over TCP/IP networks
for the NAT to alter the values of the PORT command, using an application-level gateway for this purpose. While transferring data over the network, five
File_Transfer_Protocol
Way to traverse IP address spaces without routing
for example), sometimes with the assistance of an application-level gateway (see § Applications affected by NAT), but fail when both systems are separated
Network_address_translation
IPv4 to IPv6 transition technology
historic status. It is typically used in conjunction with a DNS application-level gateway (DNS-ALG) implementation. While almost identical to NAT-PT, Network
List of IPv6 transition mechanisms
List_of_IPv6_transition_mechanisms
Japanese research facility headquartered in Tokyo
harp seal robot for therapeutic use. DeleGate, a multi-purpose application-level gateway / proxy server. Spectral Database for Organic Compounds (SDBS)
National Institute of Advanced Industrial Science and Technology
National_Institute_of_Advanced_Industrial_Science_and_Technology
Components of Microsoft Windows
Windows Remote Assistance for providing application sharing functionality among network peers. Network Level Authentication (NLA) is a feature of RDP
Remote_Desktop_Services
Protocol for communicating routing information on the Internet
called Interior Border Gateway Protocol (iBGP). In contrast, the Internet application of the protocol is called Exterior Border Gateway Protocol (EBGP). In
Border_Gateway_Protocol
Framework for decentralized, peer-to-peer networking which is part of the GNU Project
IPv4-IPv6 protocol translation in the process. GNUnet provides a DNS Application-level gateway to proxy DNS requests and map addresses to the desired address
GNUnet
Computer network protocol
some network applications (for example, FTP) require dynamic opening of multiple connections, which involves application-level gateways (ALGs) and additionally
Port_Control_Protocol
Stateless IPv4/IPv6 translation technique
restored. The advantage of stateless NAT464 is that the DNS64 and application-level gateway (ALG) are not needed. RFC 6219: China Education and Research Network
IVI_Translation
API management platform
using IBM WebSphere DataPower SOA Appliances as gateways. It provides a developer portal for application developers and to view published APIs. An administration
IBM_API_Management
Depletion of unallocated IPv4 addresses
DMZs, STUN, UPnP and application-level gateways might not be available at the ISP level. ISP-level NAT may result in multiple-level address translation
IPv4_address_exhaustion
Network device deployed in VoIP networks
a high quality of service. SBCs also replace the function of application-level gateways. In larger enterprises, SBCs can also be used in conjunction with
Session_border_controller
Computer security organization
OWASP Application Security Verification Standard (ASVS): A standard for performing application-level security verifications. OWASP XML Security Gateway (XSG)
OWASP
Specialized Internet application protocol
Constrained Application Protocol (CoAP) is a specialized UDP-based Internet application protocol for constrained devices, as defined in RFC 7252 (published
Constrained Application Protocol
Constrained_Application_Protocol
Architectural framework of telecommunications
Online charging : The S-CSCF talks to a IMS gateway function (IMS-GWF) which looks like a regular SIP application server. The IMS-GWF can signal the S-CSCF
IP_Multimedia_Subsystem
Telecommunication protocol
media gateway control protocol architecture for controlling media gateways connected to the public switched telephone network (PSTN). The media gateways provide
Media Gateway Control Protocol
Media_Gateway_Control_Protocol
Deprecated technical standard for data access over a cellular network
or not WTLS is implemented depends on the required level of security for a given WAP application, and this layer provides data integrity, privacy, authentication
Wireless_Application_Protocol
Domain at the highest level of the DNS hierarchy
country code top-level domain (IDN ccTLD) is a top-level domain with a specially encoded domain name that is displayed in an end-user application, such as a
Top-level_domain
Computer system that receives and forwards requests
the client. Effectively, a reverse proxy acts as a gateway between clients, users, and application servers and handles all the traffic routing whilst
Proxy_server
released in 2010, and is the successor for Microsoft Intelligent Application Gateway (IAG) which was released in 2007. UAG is part of the Microsoft Forefront
Microsoft Forefront Unified Access Gateway
Microsoft_Forefront_Unified_Access_Gateway
Mobile telecommunications standard
STK applications based on the Wireless Internet Gateway (WIG) specification. The update limitations hinder the number and frequency of STK application deployments
SIM_Application_Toolkit
interfaces, gateways combine a variety of cyberinfrastructure (CI) components in support of a community-specific set of tools, applications, and data collections
Science_gateway
Internet protocol that uses a proxy server
firewall. SOCKS is a de facto standard for circuit-level gateways (level 5 gateways). The circuit/session level nature of SOCKS make it a versatile tool in forwarding
SOCKS
Managing the aspects of Web APIs
requester. A gateway often includes a transformation engine to orchestrate and modify the requests and responses on the fly. A gateway can also provide
API_management
Instant messaging software
based on IBM WebSphere Application Server, which provides failover, clustering, and scalability for the HCL Sametime Gateway deployment. The product
HCL_Sametime
Cancelled lunar orbital space station
The Lunar Gateway was a planned modular space station that would have been assembled in orbit around the Moon as part of the Artemis program. Derived
Lunar_Gateway
PC meant to be used in a home theater setting
some or all the capabilities of a personal computer with a media center application that focuses on video, photo, audio playback, and sometimes video recording
Home_theater_PC
Software framework to support the development of websites
pages' author. In 1993, the Common Gateway Interface (CGI) standard was introduced for interfacing external applications with web servers, to provide a dynamic
Web_framework
2010s redevelopment scheme in Birmingham, England
The Gateway Plus (previously known as Birmingham Gateway and now known as Grand Central) project was a redevelopment scheme that regenerated Birmingham
Gateway_Plus
Internet-like structure connecting everyday physical objects
Constrained Application Protocol, ZeroMQ, and MQTT can provide lightweight data transport. In practice, many groups of IoT devices are hidden behind gateway nodes
Internet_of_things
The Gateway Control Protocol (Megaco, H.248) is an implementation of the media gateway control protocol architecture for providing telecommunication services
H.248
Model of computer data storage
programming interface (API) or by applications that use the API, such as cloud desktop storage, a cloud storage gateway or Web-based content management
Cloud_storage
computing, application-oriented networking (AON) and XML gateways are addressing the problem of SOA security in the larger context. XML gateways are hardware
SOA_security
which a queue acts as a buffer between an invoker service (such as an API Gateway) and the destination (e.g., compute resources). "Backends for frontends"
List of software architecture styles and patterns
List_of_software_architecture_styles_and_patterns
Software company in Canada
personal data in cloud applications that include: PCI DSS, ITAR, FERPA, HIPAA, and HITECH. The AppProtex Cloud Data Protection Gateway secures data in software
Perspecsys
Rocket engine in SpaceX Falcon launch vehicles
of thrust at sea level and 420 kN (95,000 lbf) in vacuum, and performing with a specific impulse of 261 s (2.56 km/s) at sea level and 303 s (2.97 km/s)
SpaceX_Merlin
Serial communications protocol
network. To support Modbus communication on a network, many modems and gateways incorporate proprietary designs (refer to the diagram: Architecture of
Modbus
Communication system in a service-oriented architecture
client-server model, wherein any application may behave as server or client. ESB promotes agility and flexibility with regard to high-level protocol communication
Enterprise_service_bus
Residential building in Salford, England
Eda (short for Erie Dock Apartments and formerly known as Anchorage Gateway), is a 101-metre (331-foot), 29-storey residential high-rise on Anchorage
Eda_(building)
Discontinued security software
Microsoft Forefront Threat Management Gateway (Forefront TMG), formerly known as Microsoft Internet Security and Acceleration Server (ISA Server), is
Microsoft Forefront Threat Management Gateway
Microsoft_Forefront_Threat_Management_Gateway
Open-source remote desktop software
Apache Guacamole is a clientless remote desktop gateway allowing users to control remote computers or virtual machines via a web browser, and allows administrators
Apache_Guacamole
Aeronautical ground to ground messaging systems
standard ATSMHS (or Air Traffic Services Message Handling Services) application for aeronautical fixed communications (e.g. for the transmission of NOTAM
Aeronautical Message Handling System
Aeronautical_Message_Handling_System
Area around the Thames Estuary, London
Thames Gateway is a term applied to an area around the Thames Estuary in the context of discourse around regeneration and further urbanisation. The term
Thames_Gateway
Software-defined wide area network
in the orchestrator or in an SD-WAN gateway, is used to make forwarding decisions for application flows. Application flows are IP packets that have been
SD-WAN
Low-power wireless mesh networking protocol for the Internet of things
individually IP-addressable, application data can be routed to and from the wider network without an application-layer gateway; this distinguishes Thread
Thread_(network_protocol)
Cancelled proposal for a river crossing in east London, England
The Thames Gateway Bridge was a proposed crossing over the River Thames in east London, England. It was first mooted in the 1970s but never came to fruition
Thames_Gateway_Bridge
Interface between web servers and JavaScript-based web applications
JSGI, or JavaScript Gateway Interface, is an interface between web servers and JavaScript-based web applications and frameworks. It was inspired by the
JSGI
Framework for communication protocols used in IP networking
application (the highest level of the model) uses a set of protocols to send its data down the layers. The data is further encapsulated at each level
Internet_protocol_suite
Software platform
Ignition gateway. It can be used by end users on any Webkit based browser to view realtime or historical process data or control industrial applications. It
Ignition_SCADA
Telecommunications router that relays SS7 messages
commonly done in some SSPs. This is also seen in Signaling Gateways that also have Application Server (AS) functionality as defined by the IETF. Some UMTS
Signal_Transfer_Point
Software layer that provides access to data
or as an intermediary service, such as a proxy or gateway. In this configuration, client applications or services connect to the data access layer, which
Data_access_layer
Cross-platform instant messaging service
gateway sends the user's Telegram name, username, and profile picture to the website owner, while the user's phone number remains hidden. The gateway
Telegram_(software)
Wireless internet protocol
receives the data from all the gateways, removes duplicate messages, and then routes the data to the correct application server. It is also responsible
LoRaWAN
Network device that permits data flow in only one direction
A unidirectional network (also referred to as a unidirectional gateway or data diode) is a network appliance or device that allows data to travel in only
Unidirectional_network
Computer networking protocol
customer-premises equipment, PPPoE may be implemented either in a unified residential gateway device that handles both DSL modem and IP routing functions or in the case
Point-to-Point Protocol over Ethernet
Point-to-Point_Protocol_over_Ethernet
Secure network protocol suite
hosts (host-to-host), between a pair of security gateways (network-to-network), or between a security gateway and a host (network-to-host). IPsec uses cryptographic
IPsec
Shadow library search engine
(October 13, 2023). "Pirate Sites Exploit 'Interplanetary File System' Gateways, Publishers Warn". TorrentFreak. Archived from the original on 2025-09-10
Anna's_Archive
Open Mobile Alliance protocol for M2M or IoT device management
device management and service enablement. The LwM2M standard defines the application layer communication protocol between an LwM2M Server and an LwM2M Client
OMA_LWM2M
Web page displayed to new users of a network
and is stored either at the gateway or on a web server hosting the web page. Depending on the feature set of the gateway, websites or TCP ports can be
Captive_portal
Dedicated computer system
hypervisors to support local DR of protected servers. They are often a gateway to a full DRaaS solution. Firewall and Security appliances Dedicated network
Computer_appliance
Form of computer communication over the internet or locally
Originally involving simple text message exchanges, modern instant messaging applications and services (also variously known as instant messenger, messaging app
Instant_messaging
Special-use top-level internet domain
disabled by default as of version 0.2.2.1-alpha due to potential application-level attacks, and with the release of 0.3-series Tor as "stable" may now
.onion
Home automation software
smart home hub/gateway/bridge/controller), that has the purpose of controlling IoT connectivity technology devices, software, applications and services
Home_Assistant
Metric of alcohol concentration in blood
content (BAC), also known as blood alcohol concentration or blood alcohol level, is the concentration of alcohol in a person's blood, measured for legal
Blood_alcohol_content
Type of cyber-attack
shell-level access to a victim's computer may slow it until it is unusable or crash it by using a fork bomb. Another kind of application-level DoS attack
Denial-of-service_attack
Traditional first example of a computer programming language
UCBLogo Umple Unlambda V Vala Visual Basic Visual IRC web2py Web Server Gateway Interface Whitespace Wt XBLite Xojo Zig Computer programming portal "99
Hello,_world
Shopping mall
Gateway Center, also referred to as Gateway Plaza Mall or simply Gateway Mall, is a shopping complex in the Spring Creek section of East New York, Brooklyn
Gateway_Center_(Brooklyn)
Open internet standards organization
Authority (IANA) Liaison from the Request for Comments (RFC) editor The Gateway Algorithms and Data Structures (GADS) Task Force was the precursor to the
Internet Engineering Task Force
Internet_Engineering_Task_Force
Linux distribution for server virtualization
Backup Client command-line application is also available for backing up files independently of PVE. The Proxmox Mail Gateway can be used independently
Proxmox_Virtual_Environment
System with multiple networked computers
architectures, primarily due to increased needs for additional hardware, servers, gateways, firewalls, new subnets, proxies, and so on. Distributed systems can also
Distributed_computing
Northwest Semitic supreme deity
"Deuteronomy 32:8–9 NIV". Bible Gateway. footnote a. "Deuteronomy 32:8–9 NRSV". Bible Gateway. "Deuteronomy 32:8-9 NET". Bible Gateway. Fontenrose 1957, pp. 277–279
El_(deity)
Communications system
generally connects input/output subsystems, host systems, linking devices and gateways. It doesn't currently provide power over the cable, although work is under
Foundation_Fieldbus
Mixed-use in Araneta City, Quezon City
The Gateway Tower is a 31-storey mixed use skyscraper located in the Araneta City at Quezon City. The tower was named after the adjacent Gateway Mall and
Gateway_Tower_(Cubao)
Simple Gateway Monitoring Protocol. IETF. p. 10. sec. 4. doi:10.17487/RFC1028. RFC 1028. Retrieved 2016-10-17. ... This memo defines a simple application-layer
List of TCP and UDP port numbers
List_of_TCP_and_UDP_port_numbers
Mobile communications LTE standard
of GPRS networks (via the Mobility Management Entity, Serving Gateway and PDN Gateway subcomponents). The subcomponents of the EPC are: The MME is the
System_Architecture_Evolution
Modern paraphrase/translation of parts of the Bible
criticism. Amid controversy, the TPT was removed in January 2022 from Bible Gateway, an online compendium of Bible translations. It remains available on the
The_Passion_Translation
Topics referred to by the same term
Computer Graphics Interface, the low-level interface between the Graphical Kernel System and hardware Common Gateway Interface, a standard for dynamic generation
CGI
Type of network address translation
ISP deploys a CGN, and uses RFC 1918 address space to number customer gateways, the risk of address collision, and therefore routing failures, arises
Carrier-grade_NAT
Wireless communication standard
protocol defines the profiles of devices and sets requirements for application level interoperability of ULE based devices. The first version of HAN FUN
DECT_Ultra_Low_Energy
The media gateway control protocol architecture is a methodology of providing telecommunication services using decomposed multimedia gateways for transmitting
Media gateway control protocol architecture
Media_gateway_control_protocol_architecture
Software that restricts or controls the content an Internet user is capable to access
technology exists in two major forms: application gateway or packet inspection. For HTTP access the application gateway is called a web-proxy or just a proxy
Internet_filter
Central part of the general packet radio service
while continuing to connect to the Internet as if from one location at the Gateway GPRS support node (GGSN). It does this by carrying the subscriber's data
GPRS_core_network
literally, "from/by an angry man". Though the form irato is masculine, the application of the phrase is not limited to men. Rather, "person" is meant because
List_of_Latin_phrases_(full)
American company
capabilities, high-level security, incentive technologies, and business intelligence that integrates with live POS systems. The mobile application connects consumers’
FreedomPay
Communications protocol for message-oriented middleware
non-XMPP systems) through a single client application. This was done through entities called transports or gateways to other instant messaging protocols like
XMPP
General-purpose programming language
web development using the Common Gateway Interface (CGI) as a "gateway" for information between the web application, the server, and the browser. C may
C_(programming_language)
Business analytics service by Microsoft
features like question and answers, enterprise-level data connectivity, and security options via Power BI Gateways. Power BI was first released to the general
Microsoft_Power_BI
Routed-SMLT SCCP Signalling Connection Control Part AppleTalk DDP GLBP Gateway Load Balancing Protocol (a Cisco proprietary protocol) HSRP Hot Standby
List of network protocols (OSI model)
List_of_network_protocols_(OSI_model)
Open-source OSGi framework
collection for Java enterprise applications. NetBeans - The free MultiLanguage IDE. SOA Software - API Gateway application from Akana (formerly SOA Software)
Apache_Felix
Computer network management and monitoring protocol
consists of a set of standards for network management, including an application layer protocol, a database schema, and a set of data objects. In typical
Simple Network Management Protocol
Simple_Network_Management_Protocol
Standard for public key encryption and signing of MIME data
are: Solutions which store private keys on the gateway server so decryption can occur prior to the gateway malware scan. These unencrypted messages are
S/MIME
Company that assists business to accept payment methods
retailers. They will often provide merchant services and act as a payment gateway or payment processor for e-commerce and brick and mortar businesses. They
Payment_service_provider
2003 book by Gregor Hohpe and Bobby Woolf
and Bobby Woolf which describes 65 patterns for the use of enterprise application integration and message-oriented middleware in the form of a pattern
Enterprise Integration Patterns
Enterprise_Integration_Patterns
Open-source software
and agentic AI. It can eliminate the need for VPNs by providing a single gateway to access computing infrastructure via SSH, Remote Desktop Protocol, HTTPS
Teleport_(software)
APPLICATION LEVEL-GATEWAY
APPLICATION LEVEL-GATEWAY
Girl/Female
Indian
Intelligent, Level headed
Surname or Lastname
English (of Norman origin)
English (of Norman origin) : nickname for a fleet-footed or timid person, from Old French levre ‘hare’ (Latin lepus, genitive leporis). It may also have been a metonymic occupational name for a hunter of hares.English (of Norman origin) : topographic name for someone who lived in a place thickly grown with rushes, from Old English lǣfer ‘rush’, ‘reed’, ‘iris’. Compare Laver 3. Great and Little Lever in Greater Manchester (formerly in Lancashire) are named with this word (in a collective sense) and in some cases the surname may also be derived from these places.English (of Norman origin) : possibly from an unrecorded Middle English survival of an Old English personal name, Lēofhere, composed of the elements lēof ‘dear’, ‘beloved’ + here ‘army’.
Boy/Male
Hindu, Indian
Application
Boy/Male
Shakespearean
King Richard III' Lord Lovel.
Male
Yiddish
(לֶעמְל) Yiddish name LEMEL means "little lamb; meek."
Boy/Male
Yiddish
Dearly loved.
Girl/Female
Indian
Prayer, Supplication
Male
English
Variant spelling of English Lovell, LOVEL means "little wolf."
Surname or Lastname
Jewish
Jewish : variant spelling of Levy.English : variant spelling of Leavey.
Surname or Lastname
English
English : from a late Old English personal name Lēofweald, composed of the elements lēof ‘dear’, ‘beloved’ + weald ‘power’, ‘rule’.French : variant spelling of Level.
Boy/Male
Hebrew
United.
Surname or Lastname
English
English : variant of Bevill.
Girl/Female
Muslim
Intelligent, Level headed
Boy/Male
Hindu
Supplication, Consolation
Surname or Lastname
English
English : variant spelling of Revell.French : habitational name from any of the places so named, for example in Isère and Haute-Garonne.French and southern French : nickname from Old French, Occitan reveau ‘rebel’.
Girl/Female
Arabic, Australian, Muslim
Level Headed; Intelligent
Surname or Lastname
English
English : variant spelling of Lovell.
Surname or Lastname
Jewish (Ashkenazic)
Jewish (Ashkenazic) : variant spelling of Levin.English, North German, and Dutch : from the Germanic personal name represented by Old English Lēofwine, Saxon Liafwin, composed of the elements lēof ‘dear’, ‘beloved’ + wine ‘friend’.English and Scottish : habitational name from places called Leven in East Yorkshire, Fife, and Renfrew. The first is probably from a stream name, possibly derived from a Celtic word meaning smooth (as in Welsh llyfyn). The Scottish place name is from a Gaelic river name meaning ‘elm river’.Dutch and North German : from a Flemish saint’s name, Lefwin (Lieven), the patron saint of Ghent (see Lewin 2).
Boy/Male
British, Christian, English, French
Little Wolf; Young Wolf
Boy/Male
Indian, Tamil
High Level
APPLICATION LEVEL-GATEWAY
APPLICATION LEVEL-GATEWAY
Boy/Male
Arabic, Celebrity, Gujarati, Hindu, Indian, Kannada, Malaysian, Marathi, Muslim, Persian, Sanskrit, Traditional
Paradise; Heaven; Enclosure; Garden
Girl/Female
Tamil
Joyful
Boy/Male
Hindu
Lord Murugan
Girl/Female
Hindu, Indian, Malayalam, Tamil
Sugam
Surname or Lastname
English
English : variant spelling of Salt.French : topographic name for someone who lived near a grove or small wood, Old French saut (Latin saltus).
Girl/Female
American, British, English, German
Modern Blend of Jerry and Marilyn; Mighty with a Spear
Girl/Female
Tamil
Goddess Parvati, Goddess of desires
Girl/Female
Hindu
Lord krishnas wife (Wife of Lord Krishna)
Girl/Female
Arabic, Australian
Exalted; Highest Social Standing
Boy/Male
Australian, British, Christian, English
Heathery Clearing; A Place Name; Heather Meadow
APPLICATION LEVEL-GATEWAY
APPLICATION LEVEL-GATEWAY
APPLICATION LEVEL-GATEWAY
APPLICATION LEVEL-GATEWAY
APPLICATION LEVEL-GATEWAY
n.
The act of applying or laying on, in a literal sense; as, the application of emollients to a diseased limb.
v. t.
To adjust or adapt to a certain level; as, to level remarks to the capacity of children.
v. t.
Figuratively, to bring to a common level or plane, in respect of rank, condition, character, privilege, etc.; as, to level all the ranks and conditions of men.
n.
The act of directing or referring something to a particular case, to discover or illustrate agreement or disagreement, fitness, or correspondence; as, I make the remark, and leave you to make the application; the application of a theory.
n.
The capacity of being practically applied or used; relevancy; as, a rule of general application.
a.
Well balanced; even; just; steady; impartial; as, a level head; a level understanding. [Colloq.]
a.
Coinciding or parallel with the plane of the horizon; horizontal; as, the telescope is now level.
v. i.
To be level; to be on a level with, or on an equality with, something; hence, to accord; to agree; to suit.
a.
Even; flat; having no part higher than another; having, or conforming to, the curvature which belongs to the undisturbed liquid parts of the earth's surface; as, a level field; level ground; the level surface of a pond or lake.
n.
Want of application, attention, or diligence; negligence; indolence.
n.
A request; a document containing a request; as, his application was placed on file.
n.
The act of fixing the mind or closely applying one's self; assiduous effort; close attention; as, to injure the health by application to study.
v. t.
To bring to a lower level; to overthrow; to topple down; to reduce to a flat surface; to lower.
n.
A uniform or average height; a normal plane or altitude; a condition conformable to natural law or which will secure a level surface; as, moving fluids seek a level.
n.
The act of making request of soliciting; as, an application for an office; he made application to a court of chancery.
n.
An approximately horizontal line or surface at a certain degree of altitude, or distance from the center of the earth; as, to climb from the level of the coast to the level of the plateau and then descend to the level of the valley or of the sea.
v. t.
To make level; to make horizontal; to bring to the condition of a level line or surface; hence, to make flat or even; as, to level a road, a walk, or a garden.
n.
A measurement of the difference of altitude of two points, by means of a level; as, to take a level.