Macuahuitl
Weapon used by pre-columbian mesoamericans
A macuahuitl is a Mesoamerican weapon consisting of a wooden sword with several embedded obsidian blades. The name is derived from the Nahuatl language and means "hand-wood". Its sides are embedded with prismatic blades traditionally made from obsidian, which is capable of producing an edge sharper than high quality steel razor blades.
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