Eyot (4)
I believe the answer is:
isle
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">eyot</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 isle that I've seen before include "eg Capri" , "Land cut off by water" , "Land encircled by water" , "Capri or Man, perhaps?" , "Lies about small land mass." .)