Of hearing (8)
'of hearing' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for auditory that I've seen before include "Relating to hearing" , "as one hears" , "Related to the sense of hearing" , "Via the ears" .)
(Other definitions for acoustic that I've seen before include "Like sound" , "Relating to sound/hearing" , "dispensing with amps?" , "Relating to hearing" , "Of sound or the sense of hearing" .)
'of hearing' is the definition.
(aural means relating to hearing)
This is the entire clue.
(Other definitions for aural that I've seen before include "of the listener" , "Hearing-related" , "Pertaining to the ear" , "Received by the ears" , "musical perception" .)