Small veg, penny each (3)
I believe the answer is:
pea
'small veg' is the definition.
'pea' can be an answer for 'veg' (pea is a type of vegetable). I am not certain of the 'small' bit.
'penny each' is the wordplay.
'penny' becomes 'p' (short for pence).
'each' becomes 'ea' (abbreviation).
'p'+'ea'='PEA'
Can you help me to learn more?
(Other definitions for pea that I've seen before include "The plant is a strange ape" , "Little green vegetable" , "food item" , "Climber" , "Annual climbing plant with edible seeds" .)