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Definitions of blackout
  1. noun
    partial or total loss of memory
    "he has a total blackout for events of the evening"

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  2. noun
    darkness resulting from the extinction of lights (as in a city invisible to enemy aircraft)

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    type of:
  3. noun
    a momentary loss of consciousness
    type of:
  4. noun
    a suspension of radio or tv broadcasting
  5. noun
    the failure of electric power for a general region
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