Definition of "turn off" []

• To power down; to stop a device by switching it off. (verb)
• To repulse, disgust, or discourage. (verb)
• To leave a road; to exit. (verb)

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• "In Partial Panel flying, the instructor in the front seat could turn off the gyro horizon and directional gyro."
• "To no avail, Scott commanded the target vehicle to turn off its attitude control system; he jiggled the target vehicle switches and cycled them on and off again; he energized and deenergized the entire Agena control panel."
• "But when the lights in the theater turn off and grainy black-and-white images appear on the screen, the men of the title do nothing but walk around in white shirts with smoking jackets and bow ties and speak in long, undecipherable harangues of American English."