Abbott-Smith Manual Greek Lexicon
νῶτος (G3577)
1 νῶτος , -ου, ὁ , in Att. most freq. τὸ νῶτον , and in pl. always τὰ νῶτα , [in LXX, ὁ ν. , pl., οἱ νῶτοι , and τὰ νῶτα , chiefly for כָּתֵף , also for עֹרֶף , מָתְנַיִם ;] the back : Ro 11:10 (LXX) .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain