σύρραξις
From LSJ
Τοὺς δούλους ἔταξεν ὡρισμένου νομίσματος ὁμιλεῖν ταῖς θεραπαινίσιν → He arranged for his male slaves to have sex with female slaves at a fixed price (Plutarch, Life of Cato the Elder 21.2)
English (LSJ)
εως, ἡ,
A dashing together, [τῶν κλυδώνων] πρὸς ἀλλήλους Arist.Mir.843a16; ὅπλων Plu.2.339b, cf. Id.Caes.44; cf. σύρρηξις.