might be related to the verbal root
*ŝml, represented by Arb. šml ‘to cover, to envelop, but not attested anywhere else (Tgr
šämlä ‘to bend together’ is probably borrowed from Arb, but cf. Amh.
šämällälä ‘to roll up something flat which was spread out’)
(Kogan 2015: 200)