(one's) lips turn blue(redirected from lips turn blue)
(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.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.