We found 7 dictionaries that define the word ack-ack gun:

General (6 matching dictionaries)

1. ack-ack gun: Vocabulary.com
2. ack-ack gun: Dictionary.com
3. ack-ack gun: Rhymezone
4. ack-ack gun: FreeDictionary.org
5. ack-ack gun: Mnemonic Dictionary
6. ack-ack gun: TheFreeDictionary.com

Computing (1 matching dictionary)

7. ack-ack gun: Encyclopedia

(Note: See ack-ack_guns as well.)

Definitions from WordNet (ack-ack gun) ▸ noun:  artillery designed to shoot upward at airplanes Opposite: aircraft, bomber, fighter, artillery Types: anti-aircraft gun, flak gun, pom-pom gun, more... ▸ Words similar to ack-ack gun ▸ Usage examples for ack-ack gun ▸ Idioms related to ack-ack gun ▸ Wikipedia articles (New!) ▸ Words that often appear near ack-ack gun ▸ Rhymes of ack-ack gun ▸ Invented words related to ack-ack gun