| 1. | (on a lathe) a perforated plate, mounted on the live spindle, to which the work is attached. |
| 2. | the part of a protective headpiece, as a diver's or astronaut's helmet, that covers the upper portion of the face, often of transparent material and sometimes movable. |
| 3. | Also called face. Electronics. the glass front of a cathode ray tube upon which the image is displayed. |
| 4. | a protective plate, as one surrounding an electric outlet or light switch. |