ἀρθμός
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)
ὁ, (ἀραρίσκω)
A a bond, league, friendship, ἀρθμῷ καὶ φιλότητι h.Merc.524, cf. A.Pr.193 (lyr.), Call.Fr.199.
German (Pape)
[Seite 350] (ἄρω), ὁ, Verbindung, Freundschaft, H. h. Merc. 524; Aesch. Prom. 191; ἔθεντο μετὰ σφίσιν Ap. Rh. 2, 755.