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| Date: | 1200-1300 |
| Language: | Old French |
| Origin: | blou |
Related topics:1CC having the colour of the sky or the sea on a fine day [↪ navy, navy blue]: 
the blue waters of the lake
the blue waters of the lake3 informal blue jokes, stories etc are about sex, in a way that might offend some people ➔ blue movie
4 to argue, talk etc about something a lot, but without achieving what you want : You can tell them till you're blue in the face, but they'll still do what they want.
argue/talk etc till you're blue in the face
informalYou can tell them till you're blue in the face, but they'll still do what they want.6 if someone goes blue, their skin becomes blue because they are cold or cannot breathe properly
go blue
British English —blueness noun [uncountable]
➔ black and blue