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English definition of “blackout”

blackout

noun [C] (HIDING)    /ˈblæk.aʊt/
a time when all lights must be hidden by law, or when there is no light or power because of an electricity failure: wartime blackouts Power lines were blown down and we had a blackout of several hours.Darkness and becoming dark the action taken to make certain that information about something is not reported to the public: a news blackoutSecrecy and privacy
(Definition of blackout noun (HIDING) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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