thumb
英 [θʌm]
美[θʌm]
	    - vt. 翻阅;以拇指拨弄;作搭车手势;笨拙地摆弄
 - vi. 用拇指翻书页;竖起拇指要求搭车
 - n. 拇指
 
英英释意
- 1. the thick short innermost digit of the forelimb
 
- 2. the part of a glove that provides a covering for the thumb
 
- 3. a convex molding having a cross section in the form of a quarter of a circle or of an ellipse