Green’s Dictionary of Slang

pope n.

[1970s] (US) an Irish (and Roman Catholic) person.

SE in slang uses

In compounds

pope-head (n.) [-head sfx (2)]

[1990s+] (Ulster) a Roman Catholic.

pope’s eye (n.) [earlier use is SE]

[mid-19C] the lymphatic gland surrounded with fat, found in a leg of mutton.

In phrases