- (n.) 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.
- (n.) One who or that which, controls or restraines; one who has power or authority to regulate or control; one who governs.
- (n.) An officer appointed to keep a counter register of accounts or to examine, rectify or verify accounts.
- (n.) 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.
- (n.) A lever controlling the speed of an engine; -- applied especially to the lever governing a throttle valve, as of a steam or gasoline engine, especially on an automobile.
- (n.) Any electric device for controlling a circuit or system;.
- (n.) 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.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). controller. Retrieved September 20, 2026, from http://smartdefine.org/controller/definitions/1991152 |
| Chicago | Webster's. 2011. "controller" http://smartdefine.org/controller/definitions/1991152 (accessed September 20, 2026). |
| Harvard | Webster's 2011, controller, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/controller/definitions/1991152>. |
| MLA | Webster's. "controller" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/controller/definitions/1991152> |