Little green veggie (3)
I believe the answer is:
pea
'little green veggie' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for pea that I've seen before include "The plant is a strange ape" , "Annual climbing plant with edible seeds" , "veg" , "Edible seed from pod" , "Little green vegetable" .)