Green legume (3)
I believe the answer is:
pea
'green legume' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for pea that I've seen before include "The plant is a strange ape" , "Annual climbing plant with edible seeds" , "Legume" , "Climbing plant; vegetable" , "Little green vegetable" .)