Colocynthis, colocynthidis f. g. Plin. A kind of wilde gourdes purging sleume, called Coloquintida.
Lewis and Short: Latin dictionary
cŏlŏcynthis, ĭdis, f., = kolokunqi/s, the colocynth or coloquintida, used as a purgative: Cucumis colocynthis, Linn.; Plin. 20, 3, 8, 14; Pall. 1, 35, 9.