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)
conclusion: P. and V. τέλος, τό, τελευτή, ἡ.
finishing touch: P. κολοφών, ὁ, κεφάλαιον, τό, P. and V. θριγκός, ὁ (Plato).