Backless sofa (5)
I believe the answer is:
divan
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">backless sofa</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 divan that I've seen before include "Backless seat; bed" , "Long backless sofa" , "resting place" , "Sofa - bed" , "Couch - bed" .)