n. Formerly, a mask concealing the face; hence, in general, any disguise or means of concealment.n. In more modern usage, the movable front of the helmet in general; more accurately, the upper movable part. Where there are two it is also called nasal. See cuts under armet and helmet.n. The countenance; visage.n. The fore piece of a cap, projecting over and protecting the eyes.To cover with a vizor, in any sense.