Bulbous plant with trumpet-shaped flowers (4)
I believe the answer is:
lily
'bulbous plant with trumpet-shaped flowers' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for lily that I've seen before include "Fragrant bulbous plant" , "Flower, maybe of the valley" , "Bulbous flowering plant" , "White" , "Girl's name - plant with hanging flowers" .)