auditory apparatus - all of the components of the organ of hearing including the outer and middle and inner ears

ear - the sense organ for hearing and equilibrium

acoustic nerve, auditory nerve, eighth cranial nerve, nervus vestibulocochlearis, vestibulocochlear nerve - a composite sensory nerve supplying the hair cells of the vestibular organ and the hair cells of the cochlea

sensory system - the body's system of sense organs

audition, auditory modality, auditory sense, sense of hearing, hearing - the ability to hear; the auditory faculty; "his hearing was impaired"