Englishfor English speakers
helmet
Noun
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A helmet is a type of hat that protects a person's head.
(Talking to a child that is going to ride a bicycle) Always remember to put your helmet on.
visor
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noun
a piece of armor plate (with eye slits) fixed or hinged to a medieval helmet to protect the face
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noun
(= bill)
a brim that projects to the front to shade the eyes
he pulled down the bill of his cap and trudged ahead