Cam

1. a. Crooked.
2. n. 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.
3. n. A curved wedge, movable about an axis, used for forcing or clamping two pieces together.
4. n. 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.
5. n. A ridge or mound of earth.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.