1. (noun) (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

• computer science
• computing

1. (noun) (colloquial) the application of maximum thrust

• drive
• driving force
• thrust

2. (noun) (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

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

• wall