Example Sentences
"A firewall blocks harmful traffic from reaching your computer."
"Companies use firewalls to protect their networks from attacks."
Synonyms & Related Terms
Quick Check
Which best describes the meaning of firewall?
Study Tips
To remember firewall, try writing it in a sentence of your own. Connect it to something you already know about technology.
Use it in conversation today — saying a word aloud three times helps lock it into long-term memory.