Plant of pea family (6)
I believe the answer is:
legume
'plant of pea family' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for legume that I've seen before include "Glue me (anag) - climbing bean or pea plant" , "Crop plant of pea family" , "Pea-family crop plant" , "Vegetable of pea family" , "pulse" .)