ὀσφύς, -ύος, ἡ
[in LXX chiefly for מֹתֶן;, also for חָלַץ, etc. ;]
the loin: Mat.3:4, Mrk.1:6; metaphorically, περιζώννυσθαι (ἀναζ-) τ. ὀσφύας, Luk.12:35, Eph.6:14, 1Pe.1:13; regarded, as by the Hebrews, as the seat of generative power, Heb.7:5, 10; metaphorically, καρπὸς τ. ὀσφύος, Act.2:30
(AS)