fire·wall 
(fīrwôl)
(fīrwôl)n.
1. A fireproof wall used as a barrier to prevent the spread of fire.
2. Computers A software program or hardware device that restricts communication between a private network or computer system and outside networks.
intr.v. fire·walled, fire·wall·ing, fire·walls
Slang
Slang
To protect (a computer or computer network) by means of a firewall.
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