Thumb - Definition

n 1: the thick short innermost digit of the forelimb [syn:
thumb, pollex]
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 [syn: ovolo, thumb,
quarter round]
v 1: travel by getting free rides from motorists [syn:
hitchhike, hitch, thumb]
2: look through a book or other written material; "He thumbed
through the report"; "She leafed through the volume" [syn:
flick, flip, thumb, riffle, leaf, riff]
3: feel or handle with the fingers; "finger the binding of the
book" [syn: finger, thumb]