meaning of visor
1. A part of a helmet, arranged so as to lift or open, and so show the face. The openings for seeing and breathing are generally in it.
2. A mask used to disfigure or disguise.
3. The fore piece of a cap, projecting over, and protecting the eyes.
4. a brim that projects to the front to shade the eyes; "he pulled down the bill of his cap and trudged
">ahead"