hearing aid 
noun
A small amplifying device which fits on the ear, worn by a partially deaf person.She did wear a big hearing aid that delivered highly amplified sound to her left ear....
- The device looks like an older hearing aid with a curved battery and electronics holder worn above and behind the ear.
- Each time you come to the church you should switch your hearing aid to the ‘T’ position for better quality sound.
- procephalic
- proception
- proceptive
- proceptivity
- procercoid
- procerebral
- procerebrum
- proceres
- procerity
- procerus
- process
- processability
- processable
- processal
- process annealing
- process art
- process black
- process butter
- process camera
- process chart
- process cheese
- process control
- process controller
- processed cheese
- processed peas