Bishop visiting important part of Ireland (5)
I believe the answer is:
kerry
'ireland' is the definition.
Both the answer and definition are singular nouns.
Perhaps you can see an association between them that I don't see?
'bishop visiting important' is the wordplay.
'bishop' becomes 'rr' (abbreviation for Right Reverend).
'visiting' means one lot of letters goes inside another.
'important' becomes 'key' (similar in meaning).
'rr' going inside 'key' is 'KERRY'.
'part of' acts as a link.
Can you help me to learn more?
(Other definitions for kerry that I've seen before include "Irish county" , "County < girl" , "County of Tralee" , "County of Ireland" .)