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fire wall definition

☆ fire wall

noun

  1. a fireproof wall to prevent the spread of fire, as from one room or compartment to the next
  2. anything serving as a protective barrier; specif., a program or system designed to protect a computer network from unauthorized access, as over the Internet
Also, and for sense fire wall usually, firewall fire′·wall′

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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