ack-ack gun ack-ack • ackee · · · Info · Definitions · Synonyms · Characters · · ack-ack gun · · Text Common · · Latin · · Scripts 11 · · Length 3 · · Syllables Definitions · · · (noun) artillery designed to shoot upward at airplanes. Synonyms: antiaircraft, antiaircraft gun, flak, flack, pom-pom, ack-ack, ack-ack gun. · · Noun Definition 1 Synonyms · · · antiaircraft · · Synonym 1 antiaircraft gun · · Synonym 2 flak · · Synonym 3 flack · · Synonym 4 pom-pom · · Synonym 5 ack-ack · · Synonym 6 Characters · · space U+0020 - hyphen-minus U+002D a latin small letter a U+0061 c latin small letter c U+0063 g latin small letter g U+0067 k latin small letter k U+006B n latin small letter n U+006E u latin small letter u U+0075