blackout

A temporary loss of consciousness.

A temporary loss of memory.

“I mean, what is she even talking about? Got her pregnant at the Halloween party? What does that mean? I don't even remember that party. I was wasted.” “Yeah, me too. I browned out that evening.” “"browned out"? What's "browned out"?” “Oh, it's when you drink so much that everything goes brown. It's not as severe as a blackout, 'cause I remember bits and pieces. I like to call it "browning out."”

A large-scale power failure, and resulting loss of electricity to consumers.

The repairs at the Koeberg Power Station in the Western Cape were on schedule for completion in the third week of May. This follows huge blackouts related to the problems at the power supplier since November.

There have been several examples of space weather affecting power grids in the last few decades, notably blackouts caused by GICs [geomagnetically induced currents] in Canada in 1989 and Sweden in 2003.

An instance of censorship, especially a temporary one.

media blackout

According to a press release issued by the clinic staff, a blackout by the local press had kept the public uninformed about the clinic's harassment.

An intentional outage of a website or other online service, typically as a form of protest.

the 2012 English Wikipedia blackout

A group of Redditors, many of whom are moderators, organized a temporary boycott, with participating subreddits going private or restricted for 48 hours starting on Monday. A Twitch stream tracking the blackout claimed that nearly 8,500 subreddits, some with tens of millions of subscribers, had gone dark by Tuesday afternoon.

Alternative form of black out.

Scouts assisted Mabel Smythe Building officials in blackouting windows.

As blades in night's chest buried, Voraciously my eyes strike, the silent Warsaw evening, my city blackouted throughout...