Shuriken

Shuriken (手裏剣) are throwing blades. The martial art of wielding the shuriken is called shuriken-jutsu.

The major varieties are the Bo Shuriken (棒手裏剣, darts) and the Hira Shuriken (throwing blades with multiple points, sometimes called Kurumaken (車剣, sometimes read as Shaken)) but more commonly known in the West as Throwing Stars, due to their distinctive shape). They have been used by ninja and other samurai.

Contrary to popular belief, (video games, Hollywood, etc,) shuriken are not designed as a primary weapon, but rather as a distraction or tactical weapon. In the past, shuriken were sometimes used as a warning means, or to deliver death threat messages to enemies. The first shuriken were actually sharpened hairpins, kept in the hair as a last resort weapon.