(archaic) A mask (cover for the face, used for disguise, protection, etc.)
1697, William Dampier, A New Voyage Round the World, Other Islands in the Gulf of Amapalla,
These salutations being ended, they all marched towards the church, for that is the place of all public meetings, and all plays and pastimes are acted there also; therefore in the churches belonging to Indian towns they have all sorts of vizards, and strange antick dresses both for men and women, and abundance of musical hautboys and strumstrums.
(archaic) A visor (part of a helmet covering the face).