from
The Collaborative International Dictionary of English v.0.48
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.
[1913 Webster]
2. A mask used to disfigure or disguise. "My very visor began
to assume life." --Shak.
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My weaker government since, makes you pull off the
visor. --Sir P.
Sidney.
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3. The fore piece of a cap, projecting over, and protecting
the eyes.
[1913 Webster]