LSJ
υ, gen. έος, hermaphrodite, of both sexes, Plu. 2.368c; Pythag. epith. of unity, Theol.Ar. 5; — also ἀρρενόθηλυς, Orph. Fr. 56, Porph. ap. Eus. PE 3.11, Man. 5.140; of a vine twining about a wild fig, D.S. 8 Fr. 23.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)