kaolin

A fine clay used in ceramics and refractories, as a filler or coating for paper and textiles, as an additive in food and toothpaste, and as an antidiarrheal drug.

A fine variety of clay, resulting from the decomposition of feldspar.

A very pure white clay, ordinarily in the form of an impalpable powder, and used to form the paste of porcelain; China clay; porcelain clay. It is chiefly derived from the decomposition of common feldspar.

A fine clay, rich in kaolinite, used in ceramics, paper–making, etc.

a fine usually white clay formed by the weathering of aluminous minerals (as feldspar); used in ceramics and as an absorbent and as a filler (e.g., in paper)