A bisentō (眉尖刀, 'brow blade')[1] is a polearm used in feudal Japan.
The bisentō has various descriptions, "a double-edged long sword with a thick truncated blade",[2] "a spear-like weapon with a blade at the end that resembles a scimitar",[3] "a polearm resembling a glaive, with a long, heavy haft and a heavy, curved blade".
[2] Depictions of this weapon can be found in the Chinese military compilations the Wǔ jīng zǒng yào, Sāncái tú huì, the Wǔbèi zhì, and many others,[5] though no artifact representations currently exist of this implement.
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