(one's) lips turn blue

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(one's) lips turn blue

One's lips have a bluish tinge, as when one is very cold or has poor circulation. Sarah is shivering and her lips are turning blue—get her out of the pool! I knew it was time to get a doctor when Martin's lips turned blue.
See also: blue, lip, turn
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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