| Main Entry: | hearing aid |
| Part of Speech: | noun |
| Definition: | mechanical listening device |
Synonyms: |
ear trumpet, electronic hearing aid, hard-of-hearing aid, listening device, transistor hearing aid, vacuum-tube hearing aid |
| Main Entry: | receiver |
| Part of Speech: | noun |
| Definition: | device for receiving |
Synonyms: |
bug*, control center, detection device, handset, headphone, listening device, radio, telephone, television, transceiver |