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To cause to move around an axis or center; cause to rotate or revolve.
(verb-transitive)
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To cause to move around in order to achieve a result, such as opening, closing, tightening, or loosening: turn the key; turn a screw.
(verb-transitive)
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To alter or control the functioning of (a mechanical device, for example) by the use of a rotating or similar movement: turned the iron to a hotter setting.
(verb-transitive)
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To perform or accomplish by rotating or revolving: turn a somersault.
(verb-transitive)
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To change the position of so that the underside becomes the upper side: turn the steak; turn a page.
(verb-transitive)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.