A practice katana is typically referred to as an "iaito" (居合刀) in Japanese. The term "iaito" translates to "sword for practicing iaido" or "sword for drawing techniques." Iaido is a Japanese martial art focused on the art of drawing and sheathing the sword, as well as executing precise and fluid sword techniques.

An iaito is specifically designed for safe and effective practice in iaido training. It resembles a traditional katana in appearance but does not have a sharpened blade. Instead, the blade is typically made of an alloy or non-ferrous metal, which gives it weight and balance similar to a real katana while reducing the risk of injury during practice. The iaito also often features a blunt or rounded tip for added safety.

Iaito swords are commonly used by practitioners of iaido, allowing them to practice and refine their sword movements and forms without the danger of using a live, sharp-edged sword. It is essential to use a proper iaito and receive proper training and supervision when practicing with one to ensure safety and correct technique.