Proto-MSA

*γarṣVn- - wrist (Kogan 2015:555)

The origin is unknown.

Mehri
γərṣáyn - wrist, ankle; ankle-joint (ML 142)
Jibbali
γarṣín - wrist, ankle, ankle-joint (JL 89)
Soqotri
ˁarṣénoʰ - forearm (Simeone–Senelle–Lonnet 1988‒1989:218)