n (1)大拇指(short，thick，inner digit of the hand in man，next to the forefinger)[C]：suck one's～吮大拇指;have four fingers and a～on each hand 每只手有四个手指和一个大拇指;

(2)手套的拇指部分(part of a glove or mitten for containing the thumb)[C]：have a hole in the～在手套的拇指那儿破了一个洞;

be all (fingers and) thumbs 很笨拙;笨手笨脚的：She could not undo the string of the parcel — she was all fingers and～s. 她解不开那包裹带子，她这人笨手笨脚的。

stand/stick out like a sore thumb 别扭，不顺畅：The dinner is formal;if you don't wear the correct clothes you'll stick out like a sore～. 晚餐是非常正式的晚宴，如果你衣着不得体，会觉得很别扭。

thumbs up/down 对……表示赞许/不满：He gave me the～s up. 他赞扬我。give the play the～s down 对这部戏不满意;

under sb's thumb 完全受人支配：She is completely under her husband's～. 她完全受她丈夫支配。

v 翻动(书页)，翻阅;把书翻旧(脏)(turn over the pages of a book;soil or wear by careless or frequent handling)[I+prep(through)，T+n]：～through a dictionary/a telephone directory/a book 翻查词典/电话本/书;a well-～ed copy 一本常被翻阅的书;～the address book looking for the numbers 翻查住址本，找门牌号码;

thumb a lift 搭乘别人的便车：I can't hope to go by train — I hope to～a lift. 我乘不起火车，希望搭个便车。

→′thumb-index n 拇指索引;书边标目;′thumbnail n 拇指甲;adj 简写的;′thumbscrew n 拇指夹(旧时刑具);′thumb-stall n 拇指套;′thumb-tack n 图钉