Place for a flowerpot (4)
I believe the answer is:
sill
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">place for a flowerpot</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for sill that I've seen before include "Ledge beneath a window" , "Shelf at the foot of a window" , "Underwater rock ledge" , "Window edge" , "Slab at foot of window" .)