(nautical) An ironblock, 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.
(espionage) The person who supervises and handles communication with an agent in the field.
(linguistics) The subject of a control verb. See Control (linguistics)
(software architecture) In software applications using the model-view-controllerdesign pattern, the part or parts of the application that treat input and output, forming an interface between models and views.
