1. Treated with clay; spec. of sugar, refined with clay; of land, dressed with clay.
1760. Massie, Tax on Malt, Table. Sugar that is nearly white … called clayed Sugar, because Clay is used in refining it.
1875. Ure, Dict. Arts, III. 943. Clayed sugar can be made only from the ripest cane-juice.
1883. Stubbs’ Mercantile Circular, 8 Nov., 982/2. The worthlessness of Manchester clayed cottons.
2. Turned to clay, clay-like.
1855. Mrs. Carlyle, Lett., II. 265. His shaky, clayed appearance.
