visor
US /ˈvaɪ.zɚ/
UK /ˈvaɪ.zɚ/

1.
visera
a movable part of a helmet that can be pulled down to protect the face
:
•
The knight lowered his visor before entering battle.
El caballero bajó su visera antes de entrar en batalla.
•
He flipped up his motorcycle helmet's visor to talk.
Se levantó la visera del casco de su motocicleta para hablar.
2.
3.
parasol, visera
a sunshade in a vehicle, typically above the windshield, that can be pulled down to block the sun
:
•
The driver adjusted the sun visor to reduce glare.
El conductor ajustó el parasol para reducir el deslumbramiento.
•
Don't forget to put down your visor when driving into the sun.
No olvides bajar tu parasol cuando conduzcas hacia el sol.