gault

Etymology
Of local origin, used by quarrymen and brickmakers to refer to the type of soil. First attested in writing as "golt" in 1815 (William Smith) and "gault" in 1816 (J Hailstone).

Noun

 * 1) A type of stiff, blue clay, sometimes used for making bricks.

Translations

 * Welsh: cleidir, cleifarl, marl