ἀμοιβάζω
From LSJ
ἐξ ὀνύχων λέοντα τεκμαίρεσθαι → judge by the claws, judge by a slight but characteristic mark, small traits give the clue to the character of a person, deduce something from a small indication, identify a lion from its claws
English (LSJ)
A exchange, τὰς ἐμπορίας Men.Prot.p.22 D.
Greek (Liddell-Scott)
ἀμοιβάζω: ἀνταλλάσσω, Μένανδρ. Ἱστ. σ. 360.