Pacific island region (7)
I believe the answer is:
oceania
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">pacific island region</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for oceania that I've seen before include "Pacific Ocean area" , "part of the Pacific" , "Polynesia, Micronesia and Melanesia" , "Islands of the central and South Pacific" , "Pacific islands area" .)