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1. The thick short innermost digit of the forelimb
   - pollex
    
2. The part of a glove that provides a covering for the thumb
    
3. A convex moulding having a cross section in the form of a quarter of a circle or of an ellipse
   - ovolo, quarter round

1. Travel by getting free rides from motorists
   "You can, of course, thumb anywhere that there are cars and traffic";
   - hitchhike, hitch
    
2. Look through a book or other written material
   "He thumbed through the report";
   - flick, flip, riffle, leaf, riff
    
3. Feel or handle with the fingers
   "thumb the binding of the book";
   - finger

Derived forms: thumbing, thumbed, thumbs

Type of: covering, finger, molding [N. Amer], moulding [Brit, Cdn], peruse, ride, touch

Part of: glove

Encyclopedia: Thumb Thumb, Tom, House