Noun visor has 2 senses
  1. visor, vizor - a piece of armor plate (with eye slits) fixed or hinged to a medieval helmet to protect the face
    --1 is a kind of armor plate, armour plate, armor plating, plate armor, plate armour
    --1 is a part of helmet
  2. bill, peak, eyeshade, visor, vizor - a brim that projects to the front to shade the eyes; "he pulled down the bill of his cap and trudged ahead"
    --2 is a kind of brim
    --2 is a part of
     baseball cap, jockey cap, golf cap; kepi, peaked cap, service cap, yachting cap
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