pope’s nose (複数形 popes' noses) === (idiomatic) The tail end piece of a cooked chicken.
1855, William Makepeace Thackeray, The Rose and the Ring, ch. 7, ---------- He took heart and began to mend immediately; and gobbled up all the jelly, and picked the last bone of the chicken―drumsticks, merry-thought, sides’-bones, back, pope’s nose, and all.