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Noun fire wall has 3 senses
- firewall - the application of maximum thrust; "he slammed the throttle to the firewall"
--1 is a kind of drive, thrust, driving force
- 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
--2 is a kind of security system
- firewall - fireproof (or fire-resistant) wall designed to prevent the spread of fire through a building or a vehicle
--3 is a kind of wall
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