thumb英 [θʌm] 美 [θʌm]

　　n.拇指; (手套的) 拇指部份;

　　vi.翘起拇指请求搭乘(过路汽车)，示意请求搭便车; 翻阅;

　　vt.翻阅; 作搭车手势; 用拇指翻脏[翻坏](书页等)

　　[例句]He took the pen between his thumb and forefinger.

　　他用拇指和食指捏着笔。

　　[其他]第三人称单数：thumbs 复数：thumbs 现在分词：thumbing 过去式：thumbed 过去分词：thumbed