a shaft that has cams attached to it, forming part of a mechanical device.
A shaft to which cams are fastened. When an object comes in contact with a cam on a camshaft as the shaft is rotated, motion is imparted to that object.
A shaft with a series of cams, whose lobes push on valve lifters to convert rotary motion into linear motion. The opening and closing of the valves in all piston engines is regulated by one or more camshafts.