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Noun: hearing aid  heer-ing eyd
  1. An electronic device that amplifies sound and is worn to compensate for poor hearing
    "His new hearing aid allowed him to hear conversations clearly for the first time in years";
    - deaf-aid [Brit]
     
  2. A conical acoustic device formerly used to direct sound to the ear of a hearing-impaired person
    "Before electronic hearing aids, people often used ear trumpets to amplify sound";
    - ear trumpet

Derived forms: hearing aids

Type of: acoustic device, electronic device

Encyclopedia: Hearing aid