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Control

(n.) The complete apparatus used to control a mechanism or machine in operation, as a flying machine in flight;
(n.) the mechanism controlling the rudders and ailerons.
(n.) Any of the physical factors determining the climate of any particular place, as latitude,distribution of land and water, altitude, exposure, prevailing winds, permanent high- or low-barometric-pressure areas, ocean currents, mountain barriers, soil, and vegetation.