ḥēḳ - lap, loin, hips (HALOT 312)

Possibly < *ḥiḳw-­ with a loss of -­w (cf. rēāˁ ‘companion, friend’ < *riˁw-?­), though the plene-spelling ḥyḳ rather speaks for proto Hbr. *ḥayḳ-­