firewall

noun

1. (colloquial) the application of maximum thrust

   noun.act

   Examples

   He moved the throttle to the firewall.

   Source: WordNet 3.0

2. (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

   noun.artifact

   Source: WordNet 3.0

3. a fireproof (or fire-resistant) wall designed to prevent the spread of fire through a building or a vehicle

   noun.artifact

   Source: WordNet 3.0