Noun | 1. | firewall - (colloquial) the application of maximum thrust; "he moved the throttle to the firewall" drive, driving force, thrust - the act of applying force to propel something; "after reaching the desired velocity the drive is cut off" colloquialism - a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech |
2. | firewall - (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 security system - (computing) a system that enforces boundaries between computer networks computer science, computing - the branch of engineering science that studies (with the aid of computers) computable processes and structures | |
3. | firewall - a fireproof (or fire-resistant) wall designed to prevent the spread of fire through a building or a vehicle wall - an architectural partition with a height and length greater than its thickness; used to divide or enclose an area or to support another structure; "the south wall had a small window"; "the walls were covered with pictures" |