Lobed organ (3)
I believe the answer is:
ear
'lobed organ' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for ear that I've seen before include "It's used in hearing" , "Lug (colloq.)" , "Fruiting head of a cereal" , "Head of grain" , "Auricle" .)