Grassy clump (3)
I believe the answer is:
sod
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">grassy clump</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 sod that I've seen before include "A piece of sward." , "'Sward, turf (3)'" , "Piece of turf; a Law named for him" , "Piece of peat or grass" , "Surface layer of ground with grass roots" .)