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

Usage examples of blackout.

Stars burned in the dark sky, more stars than he ever remembered seeing in the days before the blackout.

Also, since last Wednesday, because of cooler weather and some luck, no further blackouts had occurred.

When the blackouts hit the Energy Commission building, the hearings on Tunipah will continue by candlelight-with nothing else changed.

He went on to tell her about the new schedule of rolling blackouts beginning Wednesday.

In a way, with regular blackouts only three days away, the utility was entering new and uncharted territory.

Nim was sure that as rolling blackouts continued, there would be other losses and hardships, many unforeseen.

Shutting it down without warning would cause life-and-death intelligence blackouts all over the globe.

Mission, Circuit Completed, Firestorm, Flashpoint, Timewarp, Crackup, Blackout!

The telephone company would later report that, while its emergency generators functioned during the blackout, for an hour after it happened, demand for its services was unprecedented.

Not only the blackout, but the Luftwaffe is trying night bombing again.

Tanner had suffered one of his sporadic nosebleeds during the period of blackout.

He suffered the wheel and blackout of the ribbands that encircled his head, the electronic cluckings of the little plates that sucked against his temples.

Rozelle were apparently ready and willing to arrange for them, rather than risk any more public fights with Congress about things like TV blackouts and antitrust exemptions.

Thus, if a brownout was not sufficient, the last resort was load shedding -committing large areas to total blackout.

Kirk used blackout shades against glare—more primitive and cabinlike, he'd thought—and the shades had to be up so he could see out.