Comfy seat (8)
I believe the answer is:
armchair
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">comfy seat</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 armchair that I've seen before include "Seat with side supports" , "Place for critic" , "Roomy seat" , "Comfortable seat with raised sides" , "Amateur" .)