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fire wall

noun

Simple Definition of fire wall

  • : a very thick wall that keeps fire from spreading

  • : a computer program or piece of equipment that keeps people from using or connecting to a computer or a computer network without permission

Source: Merriam-Webster's Learner's Dictionary

Full Definition of fire wall

  1. 1 :  a wall constructed to prevent the spread of fire

  2. 2 usually firewall play \ˈfī(-ə)r-ˌwȯl\ :  computer hardware or software that prevents unauthorized access to private data (as on a company's local area network or intranet) by outside computer users (as of the Internet)

1759

First Known Use of fire wall

1759


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