Red Hill's island (4)
I believe the answer is:
oahu
(Other definitions for oahu that I've seen before include "Hawaiian island" , "Pacific island" , "popular Pacific location" , "Honolulu's island" , "Chief island of Hawaii" .)
I believe the answer is:
oahu
(Other definitions for oahu that I've seen before include "Hawaiian island" , "Pacific island" , "popular Pacific location" , "Honolulu's island" , "Chief island of Hawaii" .)