Main Page | See live article | Alphabetical index Tachi (太刀) is a Japanese sword, more curved and slightly longer than the katana. As opposed to katana it is worn with cutting-edge down. Usually used by cavalry. See also: katana, tsurugi, wakizashi, saya. There is also a Native American group known as the Tachi tribe. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.