firebrick

[ fahyuh r-brik ]

/ ˈfaɪərˌbrɪk /

a brick made of fire clay.

Origin of firebrick

First recorded in 1785–95; fire + brick

Slacked-lime putty may be used in place of hydrated lime; firebrick is best laid in fire-clay.

Farmers' Bulletin 1889 - Fireplaces and Chimneys |Arthur H. Senner
There are no firebars at the bottom, so that the fuel rests on a floor of firebrick.

Scientific American Supplement, No. 401, September 8, 1883 |Various
A single layer of firebrick completes the flooring of the interior area, which is also flush with the bottom of the flue openings.

The New York Subway |Anonymous
The straw burners are provided with a firebrick arch in the firebox.

Farm Engines and How to Run Them |James H. Stephenson

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

firebrick

/ (ˈfaɪəˌbrɪk) /

a refractory brick made of fire clay, used for lining furnaces, flues, etc