Pungent edible bulb (5)
I believe the answer is:
onion
'pungent edible bulb' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for onion that I've seen before include "The tear-inducing vegetable" , "Head (slang); vegetable" , "Shape of Russian dome" , "it can bring tears" , "Plant with edible bulb" .)