firestop

[ fahyuhr-stop ]

noun

1. any object built into a building frame to block a concealed hollow space through which a fire might pass from one part of the building to another.

Word History and Origins

Origin of firestop¹

An Americanism dating back to 1895–1900; fire + stop

Example Sentences

CST Monday through Friday or visit www.stovetopfirestop.com and click on “StoveTop FireStop Microhood Safety Notice” at the bottom of the page for more information.

From Washington Times