Pope's Nose Meaning

(idiomatic) The tail end piece of a cooked chicken.

Example: 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.