Jō

Also known as jo, jou

right|thumb|Japanese jō, tall and in circumference, made in the form of a large walking stick A is an approximately wooden staff, used in some Japanese martial arts. The martial art of wielding the jō is called jōjutsu or jōdō. Also, aiki-jō is a set of techniques in aikido which uses the jō to illustrate aikido's principles with a weapon. The jō staff is shorter than the six-foot rokushakubō. Today, the jō is still used by some Japanese police forces.