BT Ḥul 11a(19) :דילמ׳ דמנח גומרתא עליה וקלי ליה‏ : perhaps he will place a live coal on it [i.e. the skull bone] and char it (so that it splits open)
See the entire entry for gumrā, gmurtā n.f. coal

BT Ḥul 11a(19) :דילמ׳ דמנח גומרתא עליה וקלי ליה‏ : perhaps he will place a live coal on it [i.e. the skull bone] and char it (so that it splits open)
See the entire entry for ˁal prep. upon; against; to