fire wall

fire wall
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, firewall.
[1750-60, Amer.]

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Universalium. 2010.

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