大おお筒づつおおづつMeanings1nouncannonHistorical term for a large-bore gun or cannon, used in pre-modern Japanese warfare contexts.戦せん国ごく時じ代だいには大おお筒づつが城しろ攻ぜめに使つかわれた。During the Warring States period, cannons were used in castle sieges.