ack-ack
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n. 1. an antiaircraft gun or regiment.
2. antiaircraft gunfire: a burst of ack-ack fire.
Etymology: World War II: signalers' name for the letters AA.See the Introduction, Abbreviations and Pronunciation for further details.
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Copyrights:
Oxford Dictionary of the US Military
The Oxford Essential Dictionary of the U.S. Military. Copyright © 2001, 2002 by Oxford University Press, Inc. All rights reserved.
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