"slaving" or "(being) slaved" as an intransitive verb has a history that predates modern computing meaning a mechanical or electromechanical system that takes i

"slaving" or "(being) slaved" as an intransitive verb has a history that predates modern computing meaning a mechanical or electromechanical system that takes its control inputs from another (master) source. Examples: https://www.quora.com/What-is-a-slave-engine-on-on-a-locomotive https://www.quora.com/What-is-a-slave-engine-on-on-a-locomot... https://en.wikipedia.org/wiki/Horizontal_situation_indicator https://en.wikipedia.org/wiki/Horizontal_situation_indicator https://en.wikipedia.org/wiki/Propeller_synchronization https://en.wikipedia.org/wiki/Propeller_synchronization