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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

More recent history lies in the second world war ack-ack gun emplacements, still in good shape, but more and more engulfed by the vegetation every year.

From The Guardian

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

From Literature

Atkinson beautifully conjures London under siege, with the blackout and the bombing and the “ack-ack guns being assembled” in Hyde Park.

From New York Times

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