Island that's home to a state capital (4)
I believe the answer is:
oahu
'island that's home to a state capital' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for oahu that I've seen before include "popular Pacific location" , "Hawaiian island" , "Pacific island" , "Chief island of Hawaii" , "Honolulu's island" .)