Simple Definition of flak
: exploding shells that are shot at enemy aircraft from guns on the ground
: harsh criticism
Examples of flak in a sentence
He caught heavy flak for his decision to oppose the new school.
He took a lot of flak from the other kids for his unusual appearance.
Variants of flak
Origin of flak
German, from Fliegerabwehrkanonen, from Flieger flyer + Abwehr defense + Kanonen cannons
First Known Use: 1938
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