[fahyuh r-brik]


a brick made of fire clay.

Origin of firebrick

First recorded in 1785–95; fire + brick Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for firebrick

Historical Examples of firebrick

  • The straw burners are provided with a firebrick arch in the firebox.

  • The back and sides of the fireplace should be constructed of firebrick only.

  • A single layer of firebrick completes the flooring of the interior area, which is also flush with the bottom of the flue openings.

  • The furnace in which this operation is carried out is a tall, vertical cylinder of iron, lined with firebrick.

  • Adjoining is the laconicum with a firebrick furnace, after the nature of that of which I have before given full detailed drawings.

    The Turkish Bath

    Robert Owen Allsop

British Dictionary definitions for firebrick



a refractory brick made of fire clay, used for lining furnaces, flues, etc
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012