mod. feeling quite well; feeling on top of the world. : When she's in the pink again, she'll give you a ring.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
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In good health, as in We're glad to hear Bob's in the pink again. In the 1500s pink meant "the embodiment of perfection," but the current idiom dates only from about 1900.
