Dictionary/防弾ぼうだんBoudan防弾 (Boudan) is a Japanese noun meaning “bulletproof, bombproof”.Meaningsnoun, adjectival nounbulletproof; bombproofKanji in 防弾防ward off弾bulletRelated words玉ball爆弾bomb防犯カメラsecurity camera弾くto flip弾くto play (a stringed or keyboard instrument)防ぐto defend against防犯prevention of crime弾丸bullet妨害obstruction消防fire fighting弾むto spring銃弾bullet (from a rifle)