汚きたない爆ばく弾だんきたないばくだんMeanings1expression, noundirty bomb; radiological dispersal deviceA weapon that combines conventional explosives with radioactive material, designed to contaminate an area.テロリストが汚きたない爆ばく弾だんを使つかう可か能のう性せいが懸け念ねんさ