a refractory brick made of fire clay, used for lining furnaces, flues, etc
firebrick in American English
(ˈfaɪrˌbrɪk)
noun
a brick made to withstand great heat, used to line fireplaces, furnaces, etc.
firebrick in American English
(ˈfaiᵊrˌbrɪk)
noun
a brick made of fire clay
Word origin
[1785–95; fire + brick]This word is first recorded in the period 1785–95. Other words that entered Englishat around the same time include: commando, cyclic, depot, guillotine, logrolling
Examples of 'firebrick' in a sentence
firebrick
A ceramic firebrick kit is an extra with most models.