thumb

the thick short innermost digit of the forelimb

the part of a glove that provides a covering for the thumb

a convex molding having a cross section in the form of a quarter of a circle or of an ellipse

The short, thick first digit of the human hand, differing from the other fingers in having but two phalanges; the pollex. See Pollex.

travel by getting free rides from motorists

look through a book or other written material

feel or handle with the fingers

To handle awkwardly.

To play with the thumb or thumbs; to play clumsily; to thrum.