1N-COUNT [usually singular](战时)灯火管制期 A blackout is a period of time during a war in which towns and buildings are made dark so that they cannot be seen by enemy planes. (战时)灯火管制期
...blackout curtains.
遮光幕帘
2N-COUNT [usually singular, usually n NOUN](新闻等的)禁播,封锁,禁止出版 If a blackout is imposed on a particular piece of news, journalists are prevented from broadcasting or publishing it. (新闻等的)禁播,封锁,禁止出版
...a media blackout imposed by the Imperial Palace.
皇宫施行的新闻封锁
Journalists said there was a virtual news blackout about the rally.
记者们说有关这场集会的新闻实际上被封锁了。
3N-COUNT [usually singular, usually n NOUN]停电;断电 If there is a power blackout, the electricity supply to a place is temporarily cut off. 停电;断电
There was an electricity black-out in a large area in the north of the country.
该国北部大片地区断电。
4N-COUNT 晕厥;暂时昏迷 If you have a blackout, you temporarily lose consciousness. 晕厥;暂时昏迷
I suffered a black-out which lasted for several minutes.