fire·​brick | \ˈfī(-ə)r-ˌbrik \

Definition of firebrick 

: a refractory brick capable of sustaining high temperatures that is used especially for lining furnaces or fireplaces

Examples of firebrick in a Sentence

Recent Examples on the Web

Siemens built a new glass furnace with a small network of firebrick tubes. Jonathan Schifman, Popular Mechanics, "The Entire History of Steel," 9 July 2018 Its dense firebrick floor draws and holds the fire’s heat; the insulated crown stores heat overhead, balancing the thermal mass and radiating heat downward. Janet Fletcher, San Francisco Chronicle, "Why not wood-fire all your meals?," 17 Jan. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'firebrick.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of firebrick

1749, in the meaning defined above

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The first known use of firebrick was in 1749

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