Definition of firebrick
: a refractory brick capable of sustaining high temperatures that is used especially for lining furnaces or fireplaces
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Recent Examples of firebrick from the Web
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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.
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
Learn More about firebrick
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See words that rhyme with firebrick Britannica.com: Encyclopedia article about firebrick
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