Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun hearing_aid

2 senses of hearing aid

Sense 1
hearing aid, deaf-aid -- (an electronic device that amplifies sound and is worn to compensate for poor hearing)
       => electronic device -- (a device that accomplishes its purpose electronically)

Sense 2
hearing aid, ear trumpet -- (a conical acoustic device formerly used to direct sound to the ear of a hearing-impaired person)
       => acoustic device -- (a device for amplifying or transmitting sound)