blue Pronunciation: /bluː/Translate blue | into German | into Italian | into Spanish French translation of blueA. n bleu (m)B. adj 1 bleu/-e 2 (colloq) [movie] porno (fam); [joke] cochon/-onne (fam)Idioms to appear/happen out of the blue apparaître/se passer à l'improvisteblue in other Oxford dictionaries Definition of blue in the British & World English dictionary Definition of blue in the US English dictionary