片へん舷げん斉せい射しゃへんげんせいしゃMeanings1nounbroadsidehistorical termmilitaryHistorical naval term for firing all guns on one side of a warship simultaneously.戦せん艦かんが片へん舷げん斉せい射しゃを行おこない、敵てき艦かんに命めい中ちゅう弾だんを与あたえた。The battleship fired a broadside and scored hits on the enemy vessel.