Proto-MSA

*rVbṯ-at- - foam on milk (Kogan 2015:568)

The origin of Proto-MSA *rVbṯ-at- ‘foam on milk’ is unknown. (Kogan 2015:568)

Mehri
rəbṯūt - foam on milk (ML 314)
Jibbali
rəbṯɔ́t - foam on milk (JL 203)