警けい防ぼう団だんけいぼうだんMeanings1nouncivil defense unit; voluntary guardshistorical termHistorical term for a civil defense organization in Japan that existed from 1939 to 1947, often composed of volunteer guards.戦せん時じ中ちゅう、警けい防ぼう団だんは地ち域いきの防