cambox

From cam +‎ box.

cambox (plural camboxes)

1. (mechanical engineering) A metal "box" that houses cams, in the same manner that a gearbox houses gears.
   • 1961 March, ""Balmore"", “Driving and firing modern French steam locomotives”, in Trains Illustrated, page 149:

     André took off the cambox covers on a Chapelon and described in detail the action of the valves and the method of setting.