1. A covering worn on the face to conceal one's identity, as: 2. A covering, as of cloth, that has openings for the eyes, entirely or partly conceals the face, and is worn especially at a masquerade ball. 3. A grotesque or comical representation of a face, worn especially to frighten or amuse, as at Halloween. 4. A facial covering worn for ritual. 5. A figure of a head worn by actors in Greek and Roman drama to identify a character or trait and to amplify the voice. 6. A protective covering for the face or head. 7. A gas mask. 8. A covering for the nose and mouth that is used for inhaling oxygen or an anesthetic. 9. A covering worn over the nose and mouth, as by a surgeon or dentist, to prevent infection. 10. A mold of a person's face, often made after death. 11. An often grotesque representation of a head and face, used for ornamentation. 12. The face or facial markings of certain animals, such as foxes or dogs. 13. A face having a blank, fixed, or enigmatic expression. 14. Erskine Childers 15. A natural or artificial feature of terrain that conceals and protects military forces or installations. 16. An opaque border or pattern placed between a source of light and a photosensitive surface to prevent exposure of specified portions of the surface. 17. The translucent border framing a television picture tube and screen. 18. A pattern of characters, bits, or bytes used to control the elimination or retention of another pattern of characters, bits, or bytes. 19. A cosmetic preparation that is applied to the face and allowed to dry before being removed, used especially for cleansing and tightening the skin. 20. A person wearing a mask. 21. To cover with a decorative or protective mask. 22. spices that mask the strong flavor of the meat. 23. disguise 24. Undergrowth masked the entrance to the cave. 25. To cover (a part of a photographic film) by the application of an opaque border. 26. To prevent (an atom or a group of atoms) from taking part in a normal reaction. 27. To put on a mask, especially for a masquerade ball. 28. To conceal one's real personality, character, or intentions.
