Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun firewall

3 senses of firewall

Sense 1
firewall -- ((colloquial) the application of maximum thrust; "he moved the throttle to the firewall")
       => drive, thrust, driving force -- (the act of applying force to propel something; "after reaching the desired velocity the drive is cut off")

Sense 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)

Sense 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")