A turning or sliding piece which, by the shape of its periphery or face, or a groove in its surface, imparts variable or intermittent motion to, or receives such motion from, a rod, lever, or block brought into sliding or rolling contact with it.
A curved wedge, movable about an axis, used for forcing or clamping two pieces together.
A projecting part of a wheel or other moving piece so shaped as to give alternate or variable motion to another piece against which it acts.
I think most people read and re-read the things that they have liked. That's certainly true in my case. I re-read Pound a great deal, I re-read Williams, I re-read Thomas, I re-read the people whom I cam to love when I was at what you might call a formative stage. James Laughlin
Never angrily rant into your web cam. While smashing a keyboard in half over a game of 'World of Warcraft' may seem totally justified in your head, to the rest of the known universe you look like a raging psychopath. Ray William Johnson