a covering for all or part of the face, worn to conceal one's identity.
a grotesque or humorous false face worn at a carnival, masquerade, etc.: Halloween masks.
Also called swim mask. a device consisting typically of a transparent glass or plastic panel fitted into a flexible rubber gasket that fits snugly around the eyes, over the cheeks, and usually over the nose: used by skin divers.
anything that disguises or conceals; disguise; pretense: His politeness is a mask for his fundamentally malicious personality.
a likeness of a face, as one molded on the face in plaster. Compare death mask, life mask.