- (使)变黑，(使)变暗，变得一片漆黑；(电影镜头、星星等)消隐：
The electricity failed and the whole city was blacked out.
电一停，全市陷入一片黑暗。
- 擦掉，抹掉，涂掉(文章、印刷品等)，盖掉，涂黑；删去，删掉(违禁字句等)：
She blacked out the words she didn't want.
她把自己不想要的字眼都涂掉了。
New reports were blacked out.
新闻报道被删改了。
- 【戏剧】(幕间或剧终时)熄灭(舞台上的)灯光；熄灭舞台灯光，(舞台等的灯光)熄灭：
The stage was blacked out for a while and actors spoke in darkness.
舞台灯光熄灭了一会儿，演员们在黑暗中说话了。
- (战时)对(城市等)实行灯火管制，(尤指空袭时)遮暗(或熄灭)(灯火)，遮住(窗户等)使光不外泄(以防空袭)；实行灯火管制；(窗户等)被遮得不漏光：
They blacked out the city by switching off all lights.
他们熄灭所有灯火，对城市实行灯火管制。
The town was blacked out during an air raid.
空袭时该城实行灯火管制。
- (使)暂时失去知觉，(使)昏厥，(使)晕过去：
He blacked out after they hit him on the head.
他们击打他的头之后，他晕过去了。
- (使)暂时失去记忆，忘掉某事件(或事实)：
The shock was so great that she blacked out.
打击如此之大以至使她暂时失去了记忆。
- (使)暂时失去视觉，(使)眼前短时发黑：
The pilot said that at the moment everything was blacked out for him.
那位驾驶员说当时他眼前一片漆黑。
- (由于出于政治原因)查禁(或封锁)(新闻或通讯)，禁止…通消息(或交流思想)，扣发(消息)；删剪(违禁内容等)；使停刊：
blacked out all reports of the anti-government demonstration
禁止发表所有有关反政府示威的报道
The news of the kidnapping was blacked out until the police could find the child.
有关绑架小孩的消息被封锁着直至警察能找到小孩。
- (罢工)使(电视播送)停止：
Television shows were blacked out as the union trouble spread.
由于工会风潮蔓延，电视停止了播放。
- (尤指为保障门票收入)限制(或禁止)在电视中播送(要收费入场观看的节目)，不在电视中播送(某项节目)；不向(某地区)播送电视节目，在(某城市等)禁止播送这类电视，使(电视频道等)停播：
The network blacked out the New York City area.
电视网不向纽约市地区播送这类电视节目。
- 有效地封锁或干扰(广播)，干扰(无线电通讯)使无法接收；(无线电通讯)因被干扰而无法接收：
to black out the radio broadcast from a country
用干扰来封锁某国的电台广播
- (使)不起作用，使无效，使失灵；使暂时不存在：
Falling trees blacked out several electric power lines.
倒下的树使几条电力输送线路发生了故障。
- 使人忘记，使人忽视：
Don't let work in other fields black out our central task.
不要让其他方面的工作掩盖了我们的中心任务。
- (使)隔绝：
to black out a nation from the rest of the world
使一个国家与外界隔绝
- 撤销，取消(商品和机票减价等)：
The special air fare discount will be blacked out by the airlines over the holiday weekend.
假日周末航班机票临时减价将被取消。