: the short thick digit of the human hand that is analogous in position to the big toe and differs from the other fingers in having only two phalanges, allowing greater freedom of movement, and being opposable to each of them
: the part of a glove or mitten that covers the thumb
: a convex molding : ovolo
: to turn over pages
: to travel by thumbing rides : hitchhike
: to request or obtain (a ride) in a passing automobile by signaling with the thumb
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