Neuter of a presumed derivative of the same as opsarion; rations for a soldier, i.e. (by extension) his stipend or pay -- wages.
see GREEK opsarion
1. universally, a soldier's pay, allowance (Polybius 6, 39, 12; Dionysius Halicarnassus, Antiquities 9, 36), more commonly in the plural (Winers Grammar, 176 (166); Buttmann, 24 (21)) ὀψώνια, properly, that part of a soldier's support given in place of pay (i. e. rations) and the money in which he is paid (Polybius 1, 67, 1; 6, 39, 15; 1 Macc. 3:28 1 Macc. 14:32; 1 Esdr. 4:56; Josephus, Antiquities 12, 2, 3): Luke 3:14; 1 Corinthians 9:7 (cf. Winer's Grammar, § 31, 7 d.).
2. metaphorically, wages: singular 2 Corinthians 11:8; τῆς ἁμαρτίας, the hire that sin pays, Romans 6:23.