[vi.sor] n [ME viser, fr. AF, fr. OF visiere, fr. vis face--more at visage] (14c) 1: the front piece of a helmet; esp: a movable upper piece
2. a: a face mask b: disguise 3 a: a projecting front on a cap for shading the eyes b: a usu. movable flat sunshade attached at the top of an automobile windshield -- vi.sored adj -- vi.sor.less adj