γύψος

A. chalk, Hdt. 7.69, Pl. Phd. 110c.
II. gypsum, Thphr. Lap. 64, BGU 952.8 (ii/iii A. D.).
III. cement, Thphr. Lap. 65, Ph. Bel. 79.5; ἐν γύψῳ κείμενος embedded in cement, D.S. 2.10, Arr. An. 2.21.4.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project