κεραμῖτις

ιδος, την, τιν, ἡ
A. of or for pottery, κ. γῆ potter's earth, Hp. Morb. 1.17, 3.1, Plu. 2.827e, Gal. 2.137; κ.,ἡ, a gem of the colour of potsherds, Plin. HN 37.152 (acc. -την, nisi leg. -τιν, Cat.Cod.Astr. 8(2).169, cf. 8(1).190).
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project