Threshold (4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">threshold</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for sill that I've seen before include "Slab at foot of window" , "Window edge" , "Underwater rock ledge" , "Shelf at the foot of a window" , "Horizontal timber forming the bottom of a framework" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">threshold</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for verge that I've seen before include "Grass border along road" , "Grass edge to road" , "Border - edge" , "Side of road" , "Grassy road edge" .)