Samosa veggie (3)
I believe the answer is:
pea
'samosa 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 "It grows in 23 Down" , "Leguminous seed" , "garden plant" , "Seed eaten as vegetable" , "registered by princess in bed" .)