thumb

The shortest and thickest digit of the hand that for humans has the most mobility and can be made to oppose (moved to touch) all of the other fingers.

The part of a slider that may be moved linearly along the slider.

a scroll-bar thumb

A thumbnail picture.

A top hatch plate for covering an excavator bucket, used to keep material in the digger bucket after scooping it up, and not letting it spill out.

To touch or cover with the thumb.

to thumb the touch-hole of a cannon

News agencies reported Lavrov had been sent to hospital for a checkup, only for the Russian foreign ministry to rush out a picture of Lavrov in shorts, sporting an Apple watch and Jean-Michel Basquiat-inspired T-shirt, thumbing his notes for his first address at the summit on Tuesday.

To turn the pages of (a book) in order to read it cursorily.

thumb through

I thumbed through the book and decided not to bother reading it all.

To gesture with the thumb, for example when flagging a ride.

Oh, look! There’s a car coming! Thumb-no, wave. They probably don’t understand thumbing.

To hitchhike.

So I started thumbin' back east, toward my hometown.

Bobby thumbed a diesel down, just before it rained.

To soil or wear with the thumb or the fingers; to soil, or wear out, by frequent handling.

He gravely informed the enemy that all his cards had been thumbed to pieces, and begged them to let him have a few more packs.

The eastern part of the Lower Peninsula of Michigan, United States (the "Mitten").

Turnip Rock is located in a portion of eastern Michigan dubbed the Thumb, where 140 miles of coastline and waterfront towns offer a variety of outdoor activities, including biking, walking and kayaking.