Meaning of “flak” in the English Dictionary

"flak" in British English

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flaknoun [ U ]

also flack uk /flæk/ us /flæk/

flak noun [ U ] (CRITICISM)

informal strong criticism or opposition:

She took/caught some flak from her parents about her new dress.

flak noun [ U ] (FIRING OF GUNS)

the firing of guns from the ground at enemy aircraft, or the bullets, etc. that the guns fire:

They flew into heavy flak over the target area.

(Definition of “flak” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"flak" in American English

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flaknoun [ U ]

us /flæk/ also flack infml

strong criticism or opposition:

She caught some flak from her parents.

(Definition of “flak” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"flak" in Business English

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flaknoun

uk /flæk/ us

[ U ] also flack strong criticism or opposition:

catch/draw/get flak The company has been catching flak lately for its lack of customer service.
Another provision that has drawn flak would prohibit lobbyists from serving on state boards and commissions.

[ C ] →  flack

(Definition of “flak” from the Cambridge Business English Dictionary © Cambridge University Press)