Definition of blue flu in English:

blue flu

Syllabification: blue flu

Entry from US English dictionary

noun

A strike action, especially among police officers, in which workers are absent on the pretext of sickness.

Definition of blue flu in:

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Word of the day iconoclasm
Pronunciation: ʌɪˈkɒnəklaz(ə)m
noun
attacking or rejecting cherished beliefs or established values...