fire clay

noun

1. a refractory clay used for making crucibles, firebricks, etc.

fire clay

noun

1. a heat-resistant clay used in the making of firebricks, furnace linings, etc

Word History and Origins

Origin of fire clay¹

First recorded in 1810–20

Example Sentences

This mould is then filled with a mixture of one part fire clay, one part ground fire brick and one part fire sand.

From Project Gutenberg

The bolts should have a covering of fire-clay to protect them from the action of the fire.

From Project Gutenberg

Lute the joint with fire-clay, place the cover on, and bolt it down.

From Project Gutenberg

The water is kept from running into the receiver by a ring of damp fire-clay.

From Project Gutenberg

Before kindling the furnace, its inner surface is smeared over with a cream-consistenced mixture of fire-clay and water.

From Project Gutenberg