Bed cushion (6)
I believe the answer is:
pillow
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">bed cushion</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 pillow that I've seen before include "Cushion for head" , "Cushion for sleep" , "Sleeper's support" , "Head supporter in bed" , "Support for the head" .)