ˈfaɪərˌwɔːl

Definitions

1. noun

A network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules.

“The company’s IT department implemented a strong firewall to protect their network from cyber attacks.”

2. verb

To prevent or block access to a system or network.

“The firewall software was used to block the malicious software from accessing the user’s computer.”

3. noun

A physical or metaphorical barrier that blocks or diverts a flow of something.

“The firebreak was a critical component of the wildfire management strategy.”

4. noun

A barrier that prevents or diverts a flow of flames.

“The firefighters used a fire wall to contain the spreading fire.”