词典释义：
the end part of a sleeve, where the material of the sleeve is turned back or a separate band is sewn on
袖口。
the part of a glove covering the wrist
（长手套的）腕部。
〈主 北美〉 （裤脚的）翻边。
the top part of a boot, typically padded or turned down
（常指有衬垫或翻边的）靴子的最上部。
an inflatable bag wrapped round the arm when blood pressure is measured
（血压计的）橡皮囊袖带。
(
〈非 正式〉 手铐。
〈非正式〉 给…上手铐
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the man's hands were cuffed behind his back .那个男子的双手被用手铐铐在背后。
strike (someone) with an open hand, especially on the head
掌击，拍打（尤指拍打某人的头部）
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he cuffed him playfully on the ear .他开玩笑地扇了他一记耳光。
a blow given with an open hand
掌击，拍打。
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off the cuff informal without preparation 〈非正式〉 无准备地（的）；即兴地（的）they posed some difficult questions to answer off the cuff 他们提出一些难题，让当场回答 ［as modifier］an off-the-cuff remark 即兴评论 -
［ ORIGIN as if from impromptu notes made on one's shirt cuffs．］
" late Middle English （denoting a glove or mitten）： of unknown origin. mid 16th cent.: of unknown origin."
