词典释义：
not taut or held tightly in position; loose
不紧的；松弛的
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a slack rope 一根松垂的绳子
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her mouth went slack .她的嘴松开了。
(of business or trade)characterized by a lack of work or activity; quiet
（生意，交易）萧条的，不活跃的，清淡的
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business was rather slack .生意很清淡。
slow or sluggish
缓慢的，松懈的
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they were working at a slack pace .他们工作进度缓慢。
having or showing laziness or negligence
懒散的；疏忽的；懈怠的
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slack accounting procedures .松散的会计程序。
〈西印度〉 淫荡的，猥亵的，下流的
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the veteran king of slack chat .讲下流话大王。
（尤指女子）性乱交的。
(of a tide)neither ebbing nor flowing
（潮水）弛缓的，平缓的
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soon the water will become slack, and the tide will turn .不久水面就会平缓，潮水将变化。
[mass noun] the part of a rope or line which is not held taut; the loose or unused part
绳索的松弛部分
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I picked up the rod and wound in the slack 我拾起钓竿，将松弛的线卷起。
(
便裤。
〈非正式〉 懈怠；懒散
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he slept deeply, refreshed by a little slack in the daily routine .他睡得很香，每天都要懒散一会儿才精神焕发。
loosen (something, especially a rope)
使（绳索等）松弛。
reduce the intensity or speed of (something); slacken
减缓；放慢；松弛
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the horse slacked his pace .这匹马放慢脚步。
[no obj.](
（数量）减少；（强度）减弱
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the flow of blood slacked off .血流减缓。
[no obj.]
〈英，非正式〉 缓慢（或懒散）地工作
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she ticked off her girls if they were slacking .如果姑娘们工作懒散，她就斥责她们。
[no obj.](
减缓，放慢速度
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the animal doesn't slack up until he reaches the trees .这头动物一直走到树林才慢下来。
slake (lime)
熟化（石灰）。
loosely
松散地
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their heads were hanging slack in attitudes of despair .他们无力地垂下头，摆出绝望姿态。
coal dust or small pieces of coal
煤屑，煤末。
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cut someone some slack N. Amer. informal allow someone some leeway in their conduct 〈北美，非正式〉 允许某人行为有些余地 -
take （或pick up ）the slack １ use up a surplus or improve the use of resources to avoid an undesirable lull in business 抓紧松弛环节，治理整顿（指将盈余用光或提高资源利用率以避免不良的生意停滞）as domestic demand starts to flag, foreign demand will help pick up the slack . 由于国内需求开始萎缩，外贸需求将有助扭转市场的不景气 -
２ pull on the loose end or part of a rope in order to make it taut 拉紧松弛的绳索
"Old English
