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English definition of “blackout”

blackout

noun [C]  /ˈblæk·ɑʊt/ us  

blackout noun [C] (NO ELECTRICITY)

a period of time when electric power has failed, causing a loss of lights: A blackout ended the game early.

blackout noun [C] (NOT CONSCIOUS)

a short period of time when you are not conscious: He suffers from Parkinson’s disease and has occasionally experienced blackouts.
(Definition of blackout from the Cambridge Academic Content Dictionary © Cambridge University Press)
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