Lawn roll (3)
I believe the answer is:
sod
'lawn roll' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for sod that I've seen before include "Piece of ground with a mat of grass" , "A piece of sward." , "Lump of turf or unpleasant person" , "Piece of peat or grass" , "Lump of earth" .)