katana

A slightly-curved, single-edged sword carried by the samurai in fuedal Japan. Contrary to popular belief, the katana was not the primary weapon used by samurai, and was mostly used only for dueling or ceremonial purposes. Over the last few decades, movies and anime have exaggerated the sharpness and durability of the weapon to a point where many people now believe katanas to be some kind of indestructable super-sword.