ἀντάλλαγμα
From LSJ
Ὦ ξεῖν’, ἀγγέλλειν Λακεδαιμονίοις ὅτι τῇδε κείμεθα τοῖς κείνων ῥήμασι πειθόμενοι. → Go tell the Spartans, stranger passing by, that here, obedient to their laws, we lie.
English (LSJ)
ατος, τό,
A that which is given or taken in exchange, φίλου for a friend, E.Or.1157, cf. LXXJb.28.15, al.; τῆς ψυχῆς Ev.Matt.16.26, cf. Ph.Fr.110H.