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
1.travel by getting free rides from motorists
2.look through a book or other written material;
He thumbed through the report
3.feel or handle with the fingers;
finger the binding of the book