ack-ack
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About Our Definitions: All forms of a word (noun, verb, etc.) are now displayed on one page.ack–ack
noun \ˈak-ˌak\Definition of ACK-ACK
: an antiaircraft gun; also : antiaircraft fire
Origin of ACK-ACK
British signalmen's former telephone pron. of AA, abbreviation of antiaircraft
First Known Use: 1926
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