a moving piece of machinery, as a wheel or projection on a wheel, that gives an eccentric rotation or a reciprocating motion to another wheel, a roller, a shaft, etc., or that receives such motion from it
Du cam, orig., comb
river in EC England, flowing through Cambridge: 40 mi (64 km)
See cam in American Heritage Dictionary 4
An eccentric or multiply curved wheel mounted on a rotating shaft, used to produce variable or reciprocating motion in another engaged or contacted part.
Origin: Dutch kam, cog, comb; see gembh- in Indo-European roots
A river, about 64 km (40 mi) long, of east-central England. It flows past Cambridge to join the Ouse River south of Ely.