Longman Dictionary of Contemporary English homepage

blackout

 noun
     
NEW! See related topics: ILLNESS AND DISABILITYPOLITICSMILITARYNEWSPAPERS, PUBLISHINGELECTRICITY
black‧out [countable]
1TPE a period of darkness caused by a failure of the electricity supply [= power cut]
2TCNP a situation in which particular pieces of news or information are not allowed to be reported:
As the crisis worsened, the authorities imposed a news blackout.
3PM a period during a war when all the lights in a town or city must be turned off
4MI if someone has a blackout, they suddenly become unconscious
Definition from the Longman Dictionary of Contemporary English
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