Definition of blackout
- an alcoholic blackout
- blackout dates
the blackouts of World War II
She keeps flashlights and candles handy in case of a blackout.
He told his doctor he had been experiencing blackouts.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'blackout.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
had spent most of her adulthood trying to black out memories of a wretched childhood
with the delivery of the knockout punch, the screen blacks out, and in the next scene the boxer wakes up in the hospital
: a period when lights are kept off or are hidden from view to guard against enemy airplane attack in a war
: a period when lights are off because of an electrical power failure
: a sudden and temporary loss of consciousness, vision, or memory
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