| n. | 1. | a suspension of radio or tv broadcasting. |
| 2. | any darkness resulting from the extinction of lights. | |
| 3. | the failure of electric power for a general region sufficient to extinguish all normal lighting. | |
| 4. | a momentary loss of consciousness. | |
| 5. | partial or total loss of memory. | |
| 6. | a period during which artificial lighting is forbidden, as in a city as a precaution against an air raid. | |
| 7. | (Theater) the darkening of all stage lights, as at then end of a performance or between acts. | |
| 8. | suppression of information distribution; | |
| 9. | the prohibition of the broadcasting of a sports event, such as a boxing match or football game, sometimes confined to one particular area. It is usually done to encourage sales of tickets to the event. |
| Noun | 1. | blackout - a suspension of radio or tv broadcasting |
| 2. | blackout - darkness resulting from the extinction of lights (as in a city invisible to enemy aircraft) | |
| 3. | blackout - the failure of electric power for a general region | |
| 4. | blackout - a momentary loss of consciousness | |
| 5. | blackout - partial or total loss of memory; "he has a total blackout for events of the evening" Synonyms: amnesia, memory loss |