Relating to a bishop (9)
I believe the answer is:
episcopal
'relating to a bishop' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for episcopal that I've seen before include "Alice's pop? (anag)" , "Pepsi-Cola for bishops' kind of business" , "To do with bishop - maybe Pepsi-Cola" , "run by bishops" , "To do with bishops imbibing Pepsi-cola?" .)