Polynesian island whose capital is Papeete (6)
I believe the answer is:
tahiti
(Other definitions for tahiti that I've seen before include "Romantic Polynesian island, capital Papeete" , "Pacific island, Gauguin's home in the 1890s" , "part of Polynesia" , "I hit at the tropical island" , "South Pacific island, capital Papeete" .)