PArm

*pušk- - handbreadth (EDA I)

Akkadian

pušku - span (CAD P 542, AHw. 883)

Or pusku.
The Aramaic origin, first proposed for this word by von Soden 1968:263, seems highly probable.

Official Aramaic

pšk - handbreadth (DNWSI 946)

Jewish Palestinian Aramaic

pšk - handbreadth (DJPA 453)

Jewish Babylonian Aramaic

puškā - handbreadth (DJBA 894)

Syriac

peškā - handbreadth (LSyr. 612, SL 1261)