τρῆμα · trēma — LSJ
perforation, aperture, orifice, foramen, hole
perforation, aperture, orifice, Ar. V. 141, Pl. Grg. 494b, Gal. 6.178,580; τὰ τ. τῶν οὐάτων Hp. Carn. 15; τ. τυφλόν the foramen caecum in the skull, Gal. 2.838; τῆς ἀρτηρίας, [τοῦ αἰδοίου], Arist. HA 495a29, 497a25; the hole in the beam of a balance, Theol.Ar. 29.
2
= τρύπημα, sens. obsc., Ar. Ec. 906 (lyr.), Lys. 410.
II the holes, pips of dice
of the holes or pips of dice, Amips. 20.