blackout

1 ENTRIES FOUND:
blackout /ˈblækˌaʊt/ noun
plural blackouts
blackout
/ˈblækˌaʊt/
noun
plural blackouts
Britannica Dictionary definition of BLACKOUT
[count]
1 
: a period when lights are kept off or are hidden from view to guard against enemy airplane attack in a war
2 
: a period when lights are off because of an electrical power failure
— compare brownout
3 
: a sudden and temporary loss of consciousness, vision, or memory
4 
: a situation in which some kinds of information are deliberately kept from the public