DCHP-1 Online
frost one's lungs North 
frozen lung tissue resulting from breathing air at very low temperatures.
See also: frosted lung
- 1965 . . . the thermometer . . . registered 68° below zero. . . . Old timers say the horses "frost their lungs" if you drive them when the weather is too cold.
- 1965 . . . the thermometer . . . registered 68° below zero. . . . Old timers say the horses "frost their lungs" if you drive them when the weather is too cold.