The largest toe (usually) on each human foot (i.e. the toe closest to the other foot when the feet are flat on the ground, side by side, and the legs not crossed) or on a foot of certain other animals.
The short thick 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.
A thumbnail picture.
The part of a slider that may be moved linearly along the slider.
To turn the pages of (a book) in order to read it cursorily.
To manipulate (an object) with the thumb; especially, to pull back the hammer or open the cylinder of a revolver.
To hitchhike
To touch or cover with the thumb.
To soil or wear with the thumb or the fingers; to soil, or wear out, by frequent handling.
To fire (a single action revolver) quickly by pulling the hammer while keeping the trigger depressed.