16th or 17th century
A katana is a Japanese long sword used by samurai warriors. It is the most important sword of the three swords worn by samurai: katana, wakizashi, and tanto. The katana was popular from 1400 A.D. until 1876, when the samurai were abolished as a social class.
In Japanese, "katana" means a long sword and it represents a blade, which is a little curved, with a single edge and a very sharp point.