in. [for something] to undergo a major, dynamic change. : When life turned over and things went more smoothly, Frank was happier.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
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Reverse the direction or course of something or someone, as in He has a way of turning around a failing business, or If someone doesn't turn him around he's headed for trouble. [Late 1800s]
