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FIREWALL

Definition:

1. [noun] the application of maximum thrust; "he slammed the throttle to the firewall"
   
   
2. [noun] (computing) a security system consisting of a combination of hardware and software that limits the exposure of a computer or computer network to attack from crackers; commonly used on local area networks that are connected to the internet
   
   
3. [noun] fireproof (or fire-resistant) wall designed to prevent the spread of fire through a building or a vehicle
   
   

Synonyms:

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