Last Updated：2025/11/20
(nautical) A cannon that breaks loose from its moorings on a ship during battle or storm, which has the potential to cause serious damage to the ship and her crew.
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loose cannon
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Source Word
loose cannon
Noun
broadly
idiomatic
Japanese Meaning
（海上）戦闘や嵐の際に、船に固定されていた大砲がほどけ、船や乗組員に深刻な被害を及ぼす可能性のある大砲
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（ plural ）
