سمحاق

Etymology
, perhaps representing the causative prefix ša- prepended to the root  related to erasure as it is the outer layer of a bone just below the skin and mechanically attrited for bones to be used, however it must be a Southern dialectal term in origin since that prefix is almost everywhere ʾa- or at least ha- in Arabic (while  preserves this ša-, albeit with the sound ).

Noun

 * 1)  periosteum