Blackout Common

a suspension of radio or tv broadcasting

"The severe thunderstorm caused a temporary blackout on all local television channels, leaving viewers unable to watch their favorite show."

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

"The power company initiated a strategic blackout during the air raid to make the entire city invisible to enemy bombers."

the failure of electric power for a general region

"The sudden blackout left the entire city in darkness and caused traffic to grind to a halt."

a momentary loss of consciousness

"After hitting his head during the fall, he slumped to the ground and suffered a brief blackout before waking up disoriented."

partial or total loss of memory

"he has a total blackout for events of the evening"

A temporary loss of consciousness.

"After hitting his head on the curb, he suffered a brief blackout before waking up in the hospital."