What is the meaning of ack-ack?

Artillery designed to shoot upward at airplanes.
- synonyms: antiaircraft, antiaircraft gun, flak, flack, pom-pom, ack-ack gun

|15 years ago|1.1k views|share |citing

APA	WordNet. (2010). ack-ack. Retrieved September 20, 2026, from http://smartdefine.org/ack-ack/definitions/1254593
Chicago	WordNet. 2010. "ack-ack" http://smartdefine.org/ack-ack/definitions/1254593 (accessed September 20, 2026).
Harvard	WordNet 2010, ack-ack, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/ack-ack/definitions/1254593>.
MLA	WordNet. "ack-ack" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/ack-ack/definitions/1254593>

Definition by