fire-wall

fire wall

noun
1.
a partition made of fireproof material to prevent the spread of a fire from one part of a building or ship to another or to isolate an engine compartment, as on a plane, automobile, etc.
2.
an integrated collection of security measures designed to prevent unauthorized electronic access to a networked computer system.
Also, fire·wall.


Origin:
1750–60, Americanism

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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Fire-wall is always a great word to know.
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