Storey (5)
I believe the answer is:
floor
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">storey</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that storey can be written as floor)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for floor that I've seen before include "Inside horizontal surface" , "at bottom of forest" , "Puzzle" , "Dumbfound" , "Knock down; storey" .)