Abbott-Smith Manual Greek Lexicon
θώραξ (G2382)
5 θώραξ , -ακσς, ὁ , [in LXX chiefly for שִׁרְיוֹן and cogn. forms;] a breastplate : Re 9:9 , 17 ; θ. τ. δικαιοσύνης , Eph 6:14 (cf. Is 59:17 , Wi 5:18 ( 19 )); θ. πίστεως , I Th 5:8 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain