Webster
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Webster’s Revised Unabridged Dictionary · 1913

Cam

Cam (kăm), n. [Dan. kam comb, ridge; or cf. W., Gael., and Ir., cam bent. See 1st Comb.] 1. (Med.) (a) 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. (b) A curved wedge, movable about an axis, used for forcing or clamping two pieces together. (c) 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.

☞ Cams are much used in machinery involving complicated, and irregular movements, as in the sewing machine, pin machine, etc.

2. A ridge or mound of earth. [Prow. Eng.] Wright.

Cam wheel (Mach.), a wheel with one or more projections (cams) or depressions upon its periphery or upon its face; one which is set or shaped eccentrically, so that its revolutions impart a varied, reciprocating, or intermittent motion.

Cam (kăm), a. [See Kam.] Crooked. [Obs.]

Webster’s Revised Unabridged Dictionary, Noah Porter, editor (Springfield, Mass.: G. & C. Merriam, 1913). Public domain. Text as transcribed by MICRA, Inc., from Project Gutenberg. Changed for Deep Dive Bible: Greek, which our source spelled in Latin letters, set in Greek letters; entries of one spelling merged into one article; Greek words our source left out (shown as “?”), read from the 1898 printing, from the same plates (the Library of Congress’s copy), where the place could be found with certainty.