Otsuchi

An ōtsuchi is a large wooden war mallet used by the samurai class of feudal Japan. Unlike bladed weapons such as the katana or polearms such as the naginata, the ōtsuchi was a blunt-force instrument, resembling an oversized wooden mallet or sledgehammer. It had a shaft of about 6 ft much like the ono. Typically constructed of heavy wood, sometimes reinforced with iron, the ōtsuchi was not commonly used for direct combat but for breaching doors, gates, or fortifications. Its design and purpose align it with siege implements rather than battlefield sidearms, yet it occupies a place in the corpus of Japanese martial weaponry.

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