vi•sorˈvaɪ zər(n.)

or vi•zor

1. the projecting front brim of a cap.

   Category: Clothing

2. a flap, mounted on the inside of an automobile, used to shield one's eyes from glare.

   Category: Automotive

3. the front piece on a medieval helmet, often being movable and having slits for vision.

   Category: Heraldry

4. a means of concealment; disguise.

5. (v.t.)to protect or mask with a visor; shield.

Origin of visor:

1250–1300; ME viser < AF (cf. OF visiere) =vis face (see visage ) +-er -er2

vi′sored(adj.)