Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A fireproof wall used as a barrier to prevent the spread of fire.
  • noun Computers A software program or hardware device that restricts communication between a private network or computer system and outside networks.
  • intransitive verb To protect (a computer or computer network) by means of a firewall.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A fireproof barrier used to prevent the spread of fire between or through buildings, structures, electrical substation transformers, or within an aircraft or vehicle.
  • noun computer security 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.
  • verb transitive, computer security To protect with a firewall.
  • verb transitive, computer security To block with a firewall.
  • verb intransitive, slang To use maximum acceleration.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun (colloquial) the application of maximum thrust
  • noun a fireproof (or fire-resistant) wall designed to prevent the spread of fire through a building or a vehicle
  • 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

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From fire +‎ wall

Examples

  • 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.

    Wil's Ebay E-Store

  • 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.

    Wil's Ebay E-Store

  • 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.

    Wil's Ebay E-Store

  • 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.

    Wil's Ebay E-Store

  • 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.

    Wil's Ebay E-Store

  • 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.

    Wil's Ebay E-Store

  • 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.

    Wil's Ebay E-Store

  • 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.

    Wil's Ebay E-Store

  • 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.

    Wil's Ebay E-Store

  • Every day we continue to be fat, dumb, and happy with our IANA private ranges and doing port address translation at the firewall is another day further ensconced in the inebriation of IPv4.

    Five-year plan: 8 problems IT must solve

Comments

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