a. [ OE. def, deaf, deef, AS. deáf; akin to D. doof, G. taub, Icel. daufr, Dan. döv, Sw. döf, Goth. daubs, and prob. to E. dumb (the original sense being, dull as applied to one of the senses), and perh. to Gr. tyflo`s (for qyflo`s) blind, ty^fos smoke, vapor, folly, and to G. toben to rage. Cf. Dumb. ] 1. Wanting the sense of hearing, either wholly or in part; unable to perceive sounds; hard of hearing; as, a deaf man. [ 1913 Webster ]

Come on my right hand, for this ear is deaf. Shak. [ 1913 Webster ]

2. Unwilling to hear or listen; determinedly inattentive; regardless; not to be persuaded as to facts, argument, or exhortation; -- with to; as, deaf to reason. [ 1913 Webster ]

O, that men's ears should be
To counsel deaf, but not to flattery! Shak. [ 1913 Webster ]

3. Deprived of the power of hearing; deafened. [ 1913 Webster ]

Deaf with the noise, I took my hasty flight. Dryden. [ 1913 Webster ]

4. Obscurely heard; stifled; deadened. [ R. ] [ 1913 Webster ]

A deaf murmur through the squadron went. Dryden. [ 1913 Webster ]

5. Decayed; tasteless; dead; as, a deaf nut; deaf corn. [ Obs. or Prov. Eng. ] Halliwell. [ 1913 Webster ]

If the season be unkindly and intemperate, they [ peppers ] will catch a blast; and then the seeds will be deaf, void, light, and naught. Holland. [ 1913 Webster ]

v. t. To deafen. [ Obs. ] Dryden. [ 1913 Webster ]

n. an electronic device which amplifies sound and is worn to compensate for poor hearing.
Syn. -- hearing aid. [ WordNet 1.5 ]

adj. both deaf and unable to speak; without the sense of hearing or the faculty of speech. Same as Deaf-mute. [ 1913 Webster +PJC ]

v. t. [ imp. & p. p. Deafened p. pr. & vb. n. Deafening. ] [ From Deaf. ] 1. To make deaf; to deprive of the power of hearing; to render incapable of perceiving sounds distinctly. [ 1913 Webster ]

Deafened and stunned with their promiscuous cries. Addison. [ 1913 Webster ]

2. (Arch.) To render impervious to sound, as a partition or floor, by filling the space within with mortar, by lining with paper, etc. [ 1913 Webster ]

adj. rendered deaf. [ WordNet 1.5 ]

a. extremely loud; so loud as to cause deafness; as, a disco with rock music played at a deafening volume. [ PJC ]

n. The act or process of rendering impervious to sound, as a floor or wall; also, the material with which the spaces are filled in this process; pugging; sound insulation. [ 1913 Webster ]

adv. Without sense of sounds; obscurely. [ 1913 Webster ]

a. Lonely; solitary. [ Prov. Eng. ] Halliwell. [ 1913 Webster ]

n. A person who is deaf and dumb; one who, through deprivation or defect of hearing, has either failed the acquire the power of speech, or has lost it. [ See Illust. of Dactylology. ] [ 1913 Webster ]

Deaf-mutes are still so called, even when, by artificial methods, they have been taught to speak imperfectly. [ 1913 Webster ]

n. the condition of being a deaf-mute; a congenital deafness that results in inability to speak. [ 1913 Webster WordNet 1.5 ]

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 ]

a. As deaf as a stone; completely deaf. [ 1913 Webster ]

v. t. [ 1st pref. un- + deaf. ] To free from deafness; to cause to hear. [ Obs. ] Shak. [ 1913 Webster ]