Suburban New York college (4)
I believe the answer is:
iona
'suburban new york college' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for iona that I've seen before include "St Columba's monastery isle" , "Scottish island of ancient saints" , "Inner Hebridean island" , "Scots monastery isle" , "early Christian centre" .)