Obs. rare. [Of obscure origin.] Earth or clay unfit for brick-making.
1725. Act 12 Geo. I., c. 35. Several Persons … continue to make Bricks of bad Stuff and unsizeable Dimensions, and do not well burn the same; and in making thereof mix great Quantities of Soil called Spanish. Ibid. No Spanish at any time … shall be … mixed with any Brick, Earth, or Clay.
