Mehri

məwsē - rain (ML 256)

The main term for the meaning “rain” in MTO and MTjŠ (see Kogan 2015:515-516).

Proto-MSA
*ma-lsay- - rain (Kogan 2015:543)
“One is tempted to connect Proto-MSA *ma-lsay- ‘rain’ with Akk. nalšu ‘dew’ (CAD N1 202, AHw. 724). The unusual sequence of two sonorants in the Akkadian word makes feasible the secondary origin of of n-, whereas the correspondence of Akk. (and PS) š to MSA s has good precedents elsewhere in the MSA vocabulary. This comparison is, however, quite tentative in any case.”