rearview mirror
US /ˈrɪr.vjuː ˌmɪr.ər/
UK /ˈrɪr.vjuː ˌmɪr.ər/

1.
retrovisor
a mirror in a vehicle that allows the driver to see the road and traffic behind
:
•
He checked his rearview mirror before changing lanes.
Ele verificou o retrovisor antes de mudar de faixa.
•
The police car appeared suddenly in my rearview mirror.
O carro da polícia apareceu de repente no meu retrovisor.