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Noun: firewall  fI(-u)r-wol
  1. A fireproof (or fire-resistant) wall designed to prevent the spread of fire through a building or a vehicle
    "The apartment complex had firewalls between units to contain potential fires"
     
  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
    "The company's IT department configured the firewall to block unauthorized access attempts"
     
  3. (colloquial) the application of maximum thrust
    "he moved the throttle to the firewall"

Derived forms: firewalls

Type of: drive, driving force, security system, thrust, wall

Encyclopedia: Firewall