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. "He has a total blackout for events of the evening"
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; as, there was a blackout on news from the military for the first day of the Gulf War.
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.
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