ὕπερος · hyperos — LSJ
pestle, ὕπερον δὲ τρίπηχυν Hes. Op. 423; λεήναντες ὑπέροισι Hdt. 1.200; ὑπέρου μοι περιτροπὴ γενήσεται, prov. of never-ending and ineffectual labour, Pl.Com. 1, cf. Pl. Tht. 209e, Philem. 30, Plu. Comm.not. 2.1072b; so εἰ ἐς ὅλμον ὕδωρ ἐκχέας ὑπέρῳ σιδηρῷ πτίττοι Luc. Herm. 79; ὕπερα σιδηρᾶ Poll. 7.107, with which Bgk. compared . . έροις σιδηροῖς, the mutilated title of a successful comedy in IG 14.1097.
anything shaped like a pestle,
club, cudgel, Plu. Alex. 63, Luc. Demon. 48.
lever for stretching dislocated joints, Hp. Fract. 13, al.
like πηνίον, a pupa of a geometrid moth, Arist. HA 551b6.—The form ὕπερον, τό, is found in Hesperia 5.383 (Athens, v B. C., pl.), Hp. Art. 5, 78, Plb. 1.22.7, PRyl. 167.14 (pl., i A.D.), Luc. Philops. 35, Poll. 1.245, 7.107, 10.114, EM 779.48; whereas none of the other passages in which the word occurs prove anything about the gender, except Hes. l.c.; whence it has been suggested that τρίπηχυ should be read there, and ὕπερον, τό, received as the only form.