What does "cam" mean?

Cam: 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.

Additional senses

  1. 2.Crooked. [Obs.]

Sources