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red line

noun
1.
Ice Hockey. a line of the color red that is parallel to and equidistant from the goal lines and divides the rink in half.
2.
a limit, point, or boundary beyond which one may not go without incurring negative consequences:
The use of chemical weapons is a red line, which, if crossed, could trigger military action.
Origin of red line
1960-1965
1960-65
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for red line

red line

noun
1.
a point beyond which a person or group is not prepared to negotiate
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Value for red

4
4
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