τριβάς
From LSJ
διὸ καὶ μεταλάττουσι τὴν φυσικὴν χρῆσιν εἰς τὴν παρὰ φύσιν αἱ δοκοῦσαι παρθένοι τῶν εἰδώλων → therefore those professing to be virgins of the idols even change the natural use into the unnatural (Origen, commentary on Romans 1:26)
English (LSJ)
άδος, ἡ,
A a woman who practises unnatural vice with herself or with other women, Man.4.358, Ptol.Tetr.171, Vett.Val.111.7, Gloss. II = mortarium, tritorium, ib.
Greek (Liddell-Scott)
τρῐβάς: -άδος, ἡ γυνὴ ἀσελγαίνουσα καθ’ ἑαυτὴν ἢ μετ’ ἄλλων γυναικῶν μηχανωμένων παντοίους τρόπους πρὸς ἀντικατάστασιν τῆς μετ’ ἀνδρὸς συνουσίας, Μανέθων 4. 358, Τζέτζ. εἰς Ἡσ. Ἔργ. κ. Ἡμ. 693, κλπ.