Definition of "turn on" [turn on]

• To power up (a device), to start, to cause to start operating. (verb)
• To cause to take up drugs, especially hallucinogens. (verb)

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• "Their counterproposal that Jeane Kirkpatrick should move from the United Nations to the White House foundered in turn on opposition from Baker and Deaver, as well as Shultz."
• "In less time than it takes to turn on a vacuum cleaner, Ruby had power-washed the entire house."
• "We stayed at Coney Island until just past noon, strolling the midways, playing Skee-Ball, and even taking a turn on the strange Matterhorn-themed ride that spins riders past spray-painted images of the Swiss Alps and giant rest-in-peace portraits of Tupac Shakur and Biggie Smalls, while blasting hip-hop from Hot 97 at eardrum-exploding volume."