Wordie: Firewall

(n): the act of applying force to propel something

(n): (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

(n): (computing) a system that enforces boundaries between computer networks

(n): a fireproof (or fire-resistant) wall designed to prevent the spread of fire through a building or a vehicle

(n): an architectural partition with a height and length greater than its thickness; used to divide or enclose an area or to support another structure

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firewall