The term "katana" is derived from the Japanese language. In English, "katana" is used to refer to a specific type of traditional Japanese sword. The word "katana" itself does not have a direct English translation, but it is commonly understood to mean "sword" or "Japanese sword" in general.

The katana is characterized by its distinctive curved, single-edged blade, circular or squared guard (tsuba), long grip (tsuka), and a traditionally wrapped handle (tsuka-ito). It is renowned for its sharpness, balance, and the meticulous craftsmanship involved in its creation.

Historically, the katana was the weapon of the samurai, the warrior class of feudal Japan. It played a significant role in Japanese culture and history and is considered an iconic symbol of the samurai and their code of bushido.

Today, the term "katana" is widely used in English to specifically refer to this type of Japanese sword, distinguished by its unique characteristics and cultural significance.