The world's largest island (9)
I believe the answer is:
greenland
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">the world's largest 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 greenland that I've seen before include "Island mostly north of the Arctic circle" , "Large N Atlantic island" , "5 island north of 13" , "Large island self-governing province of Denmark" , "Danish self-governing island, the world's largest" .)