| a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes. |
| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
| o.p. or O.P. | |
| —abbreviation for | |
| out of print | |
| O.P. or O.P. | |
| —abbreviation for | |
| o.p. or O.P. | |
| —abbreviation for | |
| out of print | |
| O.P. or O.P. | |
| —abbreviation for | |
| opposite prompt | |
| —n | |
| theatre another name for stage right See prompt | |
| o.p. out of print |