fire wall

noun

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)

Circa 1666

First Known Use of fire wall

circa 1666


FIRE WALL Defined for English Language Learners

fire wall

noun

Definition of fire wall for English Language Learners

  • : 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

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the forefront of an action or movement

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