1N-COUNT [usually singular](戰時)燈火管制期 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. (戰時)燈火管制期
...blackout curtains.
遮光幕簾
2N-COUNT [usually singular, usually n NOUN](新聞等的)禁播,封鎖,禁止出版 If a blackout is imposed on a particular piece of news, journalists are prevented from broadcasting or publishing it. (新聞等的)禁播,封鎖,禁止出版
...a media blackout imposed by the Imperial Palace.
皇宮施行的新聞封鎖
Journalists said there was a virtual news blackout about the rally.
記者們說有關這場集會的新聞實際上被封鎖了。
3N-COUNT [usually singular, usually n NOUN]停電;斷電 If there is a power blackout, the electricity supply to a place is temporarily cut off. 停電;斷電
There was an electricity black-out in a large area in the north of the country.
該國北部大片地區斷電。
4N-COUNT 暈厥;暫時昏迷 If you have a blackout, you temporarily lose consciousness. 暈厥;暫時昏迷
I suffered a black-out which lasted for several minutes.