pope's eye

English edit

The gland surrounded with fat in the middle of the thigh of an ox or sheep.
- 1869, R[ichard] D[oddridge] Blackmore, chapter L, in Lorna Doone: A Romance of Exmoor. […], volumes (please specify |volume=I to III), London: Sampson Low, Son, & Marston, […], →OCLC:
  "Our good Annie would cook for you; and you should have the hot new milk, and the pope's eye from the mutton; and every foot of you would become a yard in about a fortnight."
A cut of steak from the buttock muscles of a bovine

(steak):