"visor" in the noun sense
1. visor, vizor
a piece of armor plate (with eye slits) fixed or hinged to a medieval helmet to protect the face
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"
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License