from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A fireproof wall used as a barrier to prevent the spread of fire.
- n. Computer Science Any of a number of security schemes that prevent unauthorized users from gaining access to a computer network or that monitor transfers of information to and from the network.
- intransitive v. Slang To apply maximum acceleration or thrust. Used of motor vehicles or aircraft.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A fireproof barrier used to prevent the spread of fire between or through buildings, structures, electrical substation transformers, or within an aircraft or vehicle.
- n. The software that monitors traffic in and out of a private network or a personal computer and allows or blocks such traffic depending on its perceived threat.
- v. To protect with a firewall.
- v. To block with a firewall.
- v. To use maximum acceleration.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. (colloquial) the application of maximum thrust
- n. a fireproof (or fire-resistant) wall designed to prevent the spread of fire through a building or a vehicle
- n. (computing) a security system consisting of a combination of hardware and software that limits the exposure of a computer or computer network to attack from crackers; commonly used on local area networks that are connected to the internet
From fire + wall (Wiktionary)