Machining :: Machining (a.) Of or pertaining to the machinery of a poem; acting or used as a machine.
Machinist :: Machinist (n.) A constrictor of machines and engines; one versed in the principles of machines.
Machinist :: Machinist (n.) One skilled in the use of machine tools.
Machinist :: Machinist (n.) A person employed to shift scenery in a theater.