This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. A fireproof wall used as a barrier to prevent the spread of fire.

n. Computer Science Any of a number of security schemes that prevent unauthorized users from gaining access to a computer network or that monitor transfers of information to and from the network.

verb-intransitive. Slang To apply maximum acceleration or thrust. Used of motor vehicles or aircraft.

n. A fireproof barrier used to prevent the spread of fire between or through buildings, structures, electrical substation transformers, or within an aircraft or vehicle.

n. The software that monitors traffic in and out of a private network or a personal computer and allows or blocks such traffic depending on its perceived threat.

v. To protect with a firewall.

v. To block with a firewall.

v. To use maximum acceleration.

n. (colloquial) the application of maximum thrust

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

n. (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

"If you have been using the Internet for any length of time, and especially if you work at a larger company and browse the Web while you are at work, you have probably heard the term firewall used."

firewalls   

thrust    driving force    drive    wall    security system   

router    virtualization    netsh    antivirus    antispyware    server    encryption    browser    infrastructure    third-party