hearing aid
US /ˈhɪrɪŋ eɪd/
UK /ˈhɪrɪŋ eɪd/

1.
aide auditive, appareil auditif
a small device that fits in or on the ear, used by partially deaf people to amplify sound
:
•
My grandmother uses a hearing aid to hear better.
Ma grand-mère utilise une aide auditive pour mieux entendre.
•
He had his hearing aid adjusted by an audiologist.
Il a fait ajuster son aide auditive par un audiologiste.