terra alba

Noun

• 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)

• fine white clay used in making tobacco pipes and pottery and in whitening leather

• finely pulverized gypsum used especially as a pigment

Related words

• Synonyms: 
  china clay , china stone , kaolin , kaoline , porcelain clay , pipeclay