1 the short thick finger at the side of each hand 大拇指
☞picture at body 见body插图
2 the part of a glove, etc that covers your thumb(1) (手套的)拇指部份
a rule of thumb→RULE¹
stand/stick out like a sore thumb→SORE¹
the thumbs up/down a sign or an expression that shows approval/disapproval 表示赞同╱不赞同的手势或用语
under sb's thumb (used about a person) completely controlled by sb (指人)完全在某人的支配或控制之下;受制于:
She's got him under her thumb.她已将他完全控制住。
thumb²
/θʌm ||; θʌm/verb
[I,T] thumb (through) sth to turn the pages of a book, etc quickly 迅速翻动(书页等)
thumb a lift to hold out your thumb to cars going past, to ask sb to give you a free ride 向路过的汽车竖起大拇指要求搭便车
☞Look at the note at hitch-hike. 参看hitch-hike的注释。