English Dictionary
Definition blackout in British English
blackout noun
[countable] noun
/ˈblækaʊt/
1
a short period when the electricity supply to a building or district is stopped, especially at night
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2
a period during a war when lights in streets and buildings are turned off so that an enemy cannot see them at night
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3
a period when you suddenly become unconscious, usually for a few minutes
4
a situation in which journalists are officially prevented from reporting news about something
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