Visor (noun)

1. A piece of equipment worn to protect the eyes from the sun or other bright light.
2. A piece of transparent material worn over the face as a protective shield.

Origin:

Middle english, from old french visiere, from viser to look at, from latin videre to see.

Examples:

1. He wore a visor to protect his eyes from the sun while playing golf.
2. The helmet had a built-in visor to protect the rider's face from wind and dust.
3. The visor on the cap can be flipped up or down.
4. The visor on the helmet can be adjusted for a perfect fit.
5. The visor on the welder's mask protects the eyes from the bright light and sparks.