Bulb vegetable (5)
I believe the answer is:
onion
'bulb vegetable' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for onion that I've seen before include "associated with 26 [TRIPE] ?" , "it can bring tears" , "Shape of Russian dome" , "reason for tears" , "Bulb used in cooking" .)