Definition of blackout
(Entry 1 of 2)
1a
: a turning off of the stage lighting to separate scenes in a play or end a play or skit
also
: a skit that ends with a blackout
b
: a period of darkness enforced as a precaution against air raids
c
: a period of darkness (as in a city) caused by a failure of electrical power
2
: a transient dulling or loss of vision, consciousness, or memory
an alcoholic blackout
3a
: a wiping out : obliteration
b
: a blotting out by censorship : suppression
a news blackout
4
: a usually temporary loss of a radio signal
5
: the prohibition or restriction of the telecasting of a sports event
6
: a time during which a special commercial offer (as of tickets) is not valid
—usually used attributively blackout dates
black out
verb
blacked out; blacking out; blacks out
Definition of black out (Entry 2 of 2)
b
: to suppress by censorship
black out the news
2
: to envelop in darkness
black out the stage
3
: to make inoperative (as by a power failure)
4
: to impose a blackout on
blacked out the local game
1
: to become enveloped in darkness
2
: to undergo a temporary loss of vision, consciousness, or memory
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Merriam-Webster unabridged
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Time Traveler for blackout
The first known use of blackout was in 1824
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