| walk-on | |
| —n | |
| 1. | a. a small part in a play or theatrical entertainment, esp one without any lines |
| b. (as modifier): a walk-on part | |
| —adj | |
| 2. | (of an aircraft or air service) having seats to be booked immediately before departure rather than in advance |
| a chattering or flighty, light-headed person. |
| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |