Dagger, usually under 10 inches. Many varieties and shapes.
a Japanese blade or small sword
a small dagger worn by Samurai as part of their three-piece set of armaments
9 inch fighting knife similar to the aikuchi, except with no hand guard.
kind of wooden Japanese dagger
a short, straight-bladed knife or shortsword. Used to describe any knife. Jitsuka practice knifework with rubber or plastic-bladed knives until purple belt when live blades are introduced into training (with swords as well)