G0161
αἰχμαλωσία
captivity
αἰχμαλωσία -ας, ἡ (αἰχμάλωτος), [in LXX chiefly for שְׁבִי, גּוֹלָה ;] captivity (Diod., al.): Rev.13:10; pl., abstr. for concr., = αἰχμάλωτοι, Eph.4:8 (LXX).† (AS)
Full Thayer's lexicon entry
αἰχμαλωσία — aichmalōsía
αἰχμαλωσία, (ας, ἡ (αἰχμάλωτος, which see), captivity: Rev 13:10; abstr, for concr, equivalent to αἰχμάλωτοι (cf. ἀδελφότης above), Eph 4:8 (from Psalm 67:19 (cf. Buttmann, 148 (129); Winer's Grammar, 225 (211)); also εἰ τίς αἰχμαλωσίαν συνάγει (according to the common but doubtless corrupt text), Rev 13:10 (as in Num 31:12, etc.). (Polybius, Diodorus, Josephus, Plutarch, others.)
2 occurrences
Ephesians (1), Revelation of John (1)