firewall
noun
a partition made of fireproof material to prevent the spread of a fire from one part of a building or ship to another or to isolate an engine compartment, as on a plane, automobile, etc.
firewalls
-
pluralof firewall.plural
The grammatical form denoting more than one person, place, thing, or idea.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Product revenue in Fortinet’s case refers to firewalls and broader secure-networking hardware offerings.
From MarketWatch ● Oct. 28, 2026
Overly restrictive firewalls can block real customers, costing companies money.
From The Wall Street Journal ● Sep. 2, 2026
Earlier this year, Amazon discovered that a low-skilled hacker used commercially available AI to breach 600 firewalls.
From Los Angeles Times ● Mar. 5, 2026
The existing players in cybersecurity provide businesses with complex firewalls: software that identifies customers’ internal users of data, and tools that allow or disallow access to information for parties external to the customer.
From Barron's ● Feb. 17, 2026
Then, last night, just before I’d succumbed to exhaustion, I’d finally managed to navigate my way through the intranet’s labyrinth of firewalls and into the main Oology Division database.
From "Ready Player One: A Novel" by Ernest Cline
