Arabic

mšṭ - to comb (BK 2 1110, Lane 2717)

mušṭ- ‘weaving reed’

PS
*muŝṭ- - comb (Kogan–Krebernik 2021b: 685)

Oddly enough, reflected only in Arabic and Akkadian. Despite all the difficulties, Akkadian to Arabic borrowing is not to be ruled out (Kogan–Krebernik 2021a:392).