Greek holiday island (5)
I believe the answer is:
corfu
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">greek holiday island</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for corfu that I've seen before include "holiday venue!" , "Greek island in the Ionian Sea" , "Popular holiday island off West Greece" , "Kerkira, Ionian island" , "holiday destination?" .)