deaf-mute /ˈdɛfˈmjut/ 形容詞
Deaf-mute 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.]
Deaf-mutes are still so called, even when, by artificial methods, they have been taught to speak imperfectly.
adj : lacking the sense of hearing and the ability to speak [syn:
n : a deaf person who is unable to speak [syn: mute, deaf-and-dumb