ack-ack
nounEtymology From ack (“A”) + ack (“A”), RAF WWI signalese for AA (“anti-aircraft”). (In modern signalese it would be called alpha-alpha.)
1
Government, Military, Politics, War Slang Antiaircraft artillery.
- The army fired upon us with ack-ack.
- Ack-acks were set up in the square.
1 more example
- He had thought how down there on the ground, on enemy soil, there were probably hundreds of Ivys, nice Fräuleins with buck teeth and fiancés on U-boats, manning the German ack-ack, all united in an effort to kill him.2015, Kate Atkinson, A God in Ruins, →ISBN, page 140:
2
Government, Military, Politics, War Slang Antiaircraft fire.
- The bomber flew through heavy ack-ack.
- Synonyms
- AAA, AA