blue Meaning in the Cambridge English Dictionary
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Meaning of “blue” in the English Dictionary

"blue" in British English

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blueadjective

uk   us   /bluː/

blue adjective (COLOUR)

A1 of the ​colour of the ​sky without ​clouds on a ​brightday, or a ​darker or ​lightertype of this: a ​faded blue ​shirt pale blue ​eyes Her ​hands were blue with ​cold (= ​slightly blue because of the ​cold).
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blue adjective (SEXUAL)

showing or ​mentioningsexualactivity in a way that ​offends many ​people: a blue ​joke a blue ​movie/​film His ​humour is a ​bit too blue for my ​tastes.

blue adjective (SAD)

C2 [after verb] informal feeling or ​showingsadness: He's been a ​bit blue since she ​left him.
See also

blue adjective (MEAT)

(also extra-rare) (of ​meat) ​cooked so that it is still very ​red
blueness
noun [U] uk   us   /ˈbluː.nəs/

bluenoun

uk   us   /bluː/

blue noun (COLOUR)

A2 [C or U] a blue ​colour
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blue noun (SPORTS)

[C] UK a ​person who has ​played a ​sport for ​Oxford University against Cambridge University or for Cambridge University against ​Oxford University, or the ​title given to him or her for this
(Definition of blue from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"blue" in American English

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blueadjective, noun [C/U]

 us   /blu/

blue adjective, noun [C/U] (COLOR)

(of) the ​color of the ​sky on a ​clear, ​brightday: She has blue ​eyes.
Idioms

blueadjective [-er/-est only]

 us   /blu/

blue adjective [-er/-est only] (SAD)

sad; ​unhappy: I don’t ​know what’s ​wrong – I just ​feel blue.
(Definition of blue from the Cambridge Academic Content Dictionary © Cambridge University Press)
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