n. 1. Incapacity of perceiving sounds; the state of the organs which prevents the impression which constitute hearing; want of the sense of hearing. [ 1913 Webster ]
2. Unwillingness to hear; voluntary rejection of what is addressed to the understanding. [ 1913 Webster ]
Nervous deafness, a variety of deafness dependent upon morbid change in some portion of the nervous system, especially the auditory nerve. [ 1913 Webster ]