Controller

·add. ·noun Any electric device for controlling a circuit or system;.

II. Controller ·noun An officer appointed to keep a counter register of accounts, or to examine, rectify, or verify accounts.

III. Controller ·noun One who, or that which, controls or restraines; one who has power or authority to regulate or control; one who governs.

IV. Controller ·add. ·noun An electromagnet, excited by the main current, for throwing a regulator magnet into or out of circuit in an automatic device for constant current regulation.

V. Controller ·add. ·noun A kind of multiple switch for gradually admitting the current to, or shutting it off from, an electric motor; as, a car controller for an electric railway car.

VI. Controller ·add. ·noun A lever controlling the speed of an engine;

— applied ·esp. to the lever governing a throttle valve, as of a steam or gasoline engine, ·esp. on an Automobile.

VII. Controller ·noun An iron block, usually bolted to a ship's deck, for controlling the running out of a chain cable. The links of the cable tend to drop into hollows in the block, and thus hold fast until disengaged.