a piece of armor plate (with eye slits) fixed or hinged to a medieval helmet to protect the face
<noun.artifact>
a brim that projects to the front to shade the eyes
<noun.artifact> he pulled down the bill of his cap and trudged ahead
Visor \Vis"or\, n. [OE. visere, F. visi[`e]re, fr. OF. vis. See {Visage}, {Vision}.] [Written also {visar}, {visard}, {vizard}, and {vizor}.] 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. ``My very visor began to assume life.'' --Shak.
My weaker government since, makes you pull off the visor. --Sir P. Sidney.
3. The fore piece of a cap, projecting over, and protecting the eyes.
In an interview in a holding cell, Kurearete, wearing orange prison-issue coveralls and black thongs, insists he had no involvement in any crime, other than to place the Raven in the sun visor.
He slipped on the felt-cushioned bronze shoulder pieces, called "heart guards," and drew on his helmet, with its lined cheek pieces, hinged visor and decorative crest.
He said the plane's sun visor was moved at least three times during the flight, too.