the structure or arrangement of parts that work together (as the parts of a machine do)
machine, device
Cases of word usage
1) the state of igniting or being ignited; (in a car) an electrical mechanism used to make the petrol in an engine explode (ignition)
2) a change of place, direction or character; a change of one thing for another; a mechanism for changing gears in a vehicle; a group of workers that starts work as another group finishes; period for which such a group works (shift)
