BLACKOUT
amnesia, memory loss, blackout
(noun) partial or total loss of memory; āhe has a total blackout for events of the eveningā
blackout
(noun) a momentary loss of consciousness
blackout
(noun) the failure of electric power for a general region
blackout, brownout, dimout
(noun) darkness resulting from the extinction of lights (as in a city invisible to enemy aircraft)
blackout
(noun) a suspension of radio or tv broadcasting
Source: WordNet® 3.1
Etymology
Noun
blackout (plural blackouts)
A temporary loss of consciousness.
A temporary loss of memory.
Synonym: pass out
An instance of censorship, especially a temporary one.
A large-scale power failure, and resulting loss of electricity to consumers.
(historical) The mandatory blocking of all light emanating from buildings as imposed during World War II.
Source: Wiktionary