Extended Strong's Greek Lexicon (Abbott-Smith based)
sword
Usage: ῥομφαία, -ας, ἡ [in LXX chiefly for חֶרֶב ;] a large broad sword, used by the Thracians (see DB, iv, 634); then generally (in LXX used interchangeably with μάχαιρα, which see), a sword: Rev.1:16 2:12, 16 6:8 19:15, 21; metaphorically, Luk.2:35.† (AS)