Isle (6)
I believe the answer is:
island
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">isle</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that isle can be written as island)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for island that I've seen before include "Ground surrounded by water" , "Body of land entirely surrounded by water" , "Piece of land surrounded by water" , "See 9 across" , "raised area in road" .)