Lawn (4)
I believe the answer is:
turf
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">lawn</span>' is the definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for turf that I've seen before include "Sward, grass" , "Piece of lawn" , "Horse racing, generally" , "(The) horse-racing (world)" , "Personal territory; sod" .)