Auditory organs (4)
I believe the answer is:
ears
'auditory organs' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for ears that I've seen before include "Auditory organs" , "Heads of corn" , "Spikes (of cereals)" , "Walls are said to have them" , "Locations for buds or studs?" .)