BT Ḥul 17b(6) :מורשא קמא מחליש ^ומורשא^ בתר׳ בזע‏ : the front projecting portion (of the knife) strips off (the skin) and the rear projecting portion pierces (into the organs)
See the entire entry for ḥlš vb. to strip

BT Ḥul 17b(6) :דמורשא קמא מחליש ^ומורשא^ בתר׳ בזע‏ : the first projecting portion strips it off and the latter projecting portion pierces it
See the entire entry for mwršˀ n.m. projecting piece