ack-ack

Or Ack-Ack

[ak-ak]

noun

Informal.

1. antiaircraft fire.

2. antiaircraft arms.

ack-ack

/ ˈækˌæk /

noun

1. 1. anti-aircraft fire

   2. ( as modifier )

      ack-ack guns

2. anti-aircraft arms

Word History and Origins

Origin of ack-ack¹

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

Word History and Origins

Origin of ack-ack¹

C20: British army World War I phonetic alphabet for AA, abbreviation of anti-aircraft