Tachi (太刀) is a traditionally crafted Japanese sword worn by feudal Japan's samurai elite. Compared to the katana and other Japanese swords, tachi often refers to a longer, more curved sword. Tachi was loosely hanging on the left waist, with its edge facing the ground instead of facing up, so samurai could draw it quickly to chop down warriors on the floor. Authentic tachi must be hung on a leather device or two hangers to ensure it lies flat against the body.