资料来源 : pyDict

助听器

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Audiphone \Au"di*phone\, n. [L. audire to hear + Gr. ? sound.]
   An instrument which, placed against the teeth, conveys sound
   to the auditory nerve and enables the deaf to hear more or
   less distinctly; a dentiphone.