PS

*rVby- - crotch, groin (SED I No. 227; Kogan 2011: 218)

Akkadian
ribītu - groin (CAD R 321, AHw. 964)

No connection with ribītu ‘square, avenue’, see Kogan 2003:131f.

Syriac
rbubyātā, ˀarbubyātā - swellings in the groin; testicles (LSyr. 707, SL 1426)
Arabic
ˀurbiyyat- - aine; racine de fémur (elder; femur root) (BK 1 814)
Amharic
reb - anus, buttocks (AED 392)
Muher
äribä - abdomen below the navel (EDG 84)
Mehri
rəbbūt - groin; (knee-)cap; pain in the groin, armpit (ML 312)
Jibbali
rɔ̄t, pl. rub - groin; knee-cap; pain in the groin, armpit (JL 202)