heb

yaw-rake'

"yârêk"

יָרֵך

1) thigh, side, loin, base
1a) thigh
1a1) outside of thigh (where sword was worn)
1a2) loins (as the seat of procreative power)
1b) side (flank) (of object)
1c) base

from an unused root meaning to be soft;

joints of thy thighs are like jewels

smote upon my thigh I was ashamed

therefore upon thy thigh