blackout

Noun

• partial or total loss of memory
  • he has a total blackout for events of the evening
    

• a momentary loss of consciousness

• the failure of electric power for a general region

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

• a suspension of radio or tv broadcasting

Related words

• Synonyms: 
  amnesia , memory loss , brownout , dimout