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Related to ack-ack: flak
1. An antiaircraft gun.
2. Antiaircraft fire.
a. anti-aircraft fire
b. (as modifier): ack-ack guns.
2. (Military) anti-aircraft arms
[C20: British army World War I phonetic alphabet for AA, abbreviation of anti-aircraft]
n. (esp. during World War II)
1. antiaircraft fire.
2. antiaircraft arms.
[1935–40; for A.A. (abbr. of a(nti)a(ircraft))]
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|Noun||1.||ack-ack - artillery designed to shoot upward at airplanes|
Bofors gun - an automatic double-barreled antiaircraft gun
gun - a weapon that discharges a missile at high velocity (especially from a metal tube or barrel)
predictor - a computer for controlling antiaircraft fire that computes the position of an aircraft at the instant of a shell's arrival