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ack-ack

American  
[ak-ak] / ˈækˌæk /
Or Ack-Ack

noun

Informal.
  1. antiaircraft fire.

  2. antiaircraft arms.


ack-ack British  
/ ˈækˌæk /

noun

    1. anti-aircraft fire

    2. ( as modifier )

      ack-ack guns

  1. anti-aircraft arms

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of ack-ack

1935–40; for A.A. (abbreviation of a(nti) a(ircraft) ) as said by British signalmen referring to sense 2

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“The surface vessels were throwing up a tremendous barrage of ack-ack fire.”

From New York Times • Nov. 13, 2022

Tales are legion of journalists prepared with probing, deeply researched questions who find themselves confronted with answers consisting of “Yeah,” “No” or “I don’t know” spit back at them like ack-ack fire.

From Salon • Jun. 3, 2015

Jolie begins with a superbly choreographed B-24 raid over the Pacific — pellucid morning sky, heavenly choir, the ack-ack of enemy fire — with Louie as the bombardier.

From Time • Dec. 23, 2014

At her ack-ack battery she shares a room in a camouflaged wooden hut with another ATS officer.

From Time Magazine Archive

The ack-ack guns make so much noise you can’t hear your own voice.

From "The Diary of a Young Girl" by Anne Frank