The islands of the Pacific (7)
I believe the answer is:
oceania
'the islands of the pacific' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for oceania that I've seen before include "part of the Pacific" , "Pacific island area" , "The Pacific islands taken together" , "Large South Pacific region" , "Islands of the south Pacific -- a neo-CIA (anag)" .)