Otter's lair (4)
I believe the answer is:
holt
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">otter's lair</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 holt that I've seen before include "Otter's den" , "Otter's burrow" , "Otterden" , "on the Dee south of Chester" , "Otter's lair" .)