Arabic

šrm - fendre légerement, déchirer légèrement, y causer une déchirure (to crack lightly, tear lightly, cause a tear) (BK 1 1222)

PS
*ŝrm - to cut, split, break (SED I 324–325)
Cf. *ŝrm to have a nose with a cut-off tip; have a slit lip (SED I No. 69ᵥ).