Gets grass back (5)
I believe the answer is:
draws
'gets' is the definition.
('draw' can be a synonym of 'get')
'grass back' is the wordplay.
'grass' becomes 'sward' (literary term for grass).
'back' says the letters should be written backwards.
'sward' backwards is 'DRAWS'.
(Other definitions for draws that I've seen before include "proves alluring" , "lugs" , "Sketches" , "Gets out" , "Raffles" .)