firewall Meaning, Definition & Usage

  1. noun (colloquial) the application of maximum thrust
    • he moved the throttle to the firewall
  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
  3. noun a fireproof (or fire-resistant) wall designed to prevent the spread of fire through a building or a vehicle

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