fire wall

noun

1
: a wall constructed to prevent the spread of fire
2
usually firewall : 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)

Examples of fire wall in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
New safety measures include fire walls, state-of-the-art alarms, and sprinklers with a misting system to reduce water impact. Dana Thomas, Architectural Digest, 20 Nov. 2024 By next summer, workers are expected to put in new roof coverings, electric cabling and a state-of-the art fire protection system — the old attic had no sprinklers or fire wall. Aurelien Breeden, New York Times, 8 Dec. 2023

Word History

First Known Use

circa 1666, in the meaning defined at sense 1

Time Traveler
The first known use of fire wall was circa 1666

Dictionary Entries Near fire wall

Cite this Entry

“Fire wall.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fire%20wall. Accessed 24 Jan. 2025.

Kids Definition

fire wall

noun
1
: a wall for preventing the spread of fire
2
usually firewall : computer hardware or software that limits access by outside users on a network
Last Updated: - Updated example sentences
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