Pungent bulbs (6)
I believe the answer is:
onions
'pungent bulbs' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for onions that I've seen before include "Tearful bulbs" , "Punguent bulbs" , "Pungent, edible bulbs" , "Tear-inducing edible bulbs" , "Bulb vegetables" .)