noun

firewall

firewall

You should install a firewall to protect your computer.

You should install a firewall to protect your computer.

The building has a firewall between the apartments.

The building has a firewall between the flats.

install a ((firewall)) to install a security system You should install a firewall.

a ((firewall)) between sth. a physical barrier The building has a firewall between the flats.

Synonyms: (computing) security software; (construction) fire barrier

A compound of 'fire' + 'wall'. A wall that stops fire.

Imagine a literal 'wall' that blocks digital 'fire' (viruses, attacks) from reaching your computer.

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