Largest Greek island (5)
I believe the answer is:
crete
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">largest greek island</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 crete that I've seen before include "Large island in Med" , "Erect (anag) - Mediterranean island" , "Mediterranean island with Minoan remains" , "European location" , "Greek island, site of the Minoan civilisation" .)