Home › Words › S › skysweeperskysweeperskysweeper · noun — A kind of anti-aircraft gun used in the mid-20th century.Definition from Wiktionary (CC BY-SA 3.0).Among words judged in Lexicurio's Arena, skysweeper ranks #16,998 of 43,042 for Qualifying.EtymologyFrom sky + sweeper.nounA kind of anti-aircraft gun used in the mid-20th century.Definitions & examples from Wiktionary (CC BY-SA 3.0).