Noun has 3 senses

• terra alba(n = noun.substance) - finely pulverized gypsum used especially as a pigment;


• terra alba(n = noun.substance) pipeclay - fine white clay used in making tobacco pipes and pottery and in whitening leather;


• terra alba(n = noun.substance) china clay, china stone, kaolin, kaoline, porcelain clay - 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);