Ack-ack


antiaircraft fire.
antiaircraft arms.
Historical Examples

“The ack-ack will knock those planes out of the sky,” one of the sailors said.
The Lost Warship Robert Moore Williams

That was a score for the ack-ack gunners and the ground boys.
A Yankee Flier with the R.A.F. Rutherford G. Montgomery

The Jerries were at it again and seemed to have slipped inside the balloons and the ring of ack-ack guns.
A Yankee Flier with the R.A.F. Rutherford G. Montgomery

noun (military)

anti-aircraft fire
(as modifier): ack-ack guns

anti-aircraft arms

1939, representing A.A., the military abbreviation for anti-aircraft (see ack).

modifier

: ack-ack positions

noun

Antiaircraft gun or guns; antiaircraft fire; aa, flak (WWI)

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