BT Ḥul 62b(22) :ההוא בר אווזא דהוה בי רב דהוו מקלפין ליה ולא מיקלף קרקבניה‏ : the case of the goose of PN that they were trying to peel (i.e., remove fat? to prove kashrut), and its craw could not be peeled
See the entire entry for qu/arqbān, qu/arqbānā n.m. craw