A bō (棒: ぼう), joong bong (Korean), bang (Chinese), or kun (Okinawan) is a piece of wood of varying lengths staff weapon used in Okinawa. Bō are typically around 1.8 m (71 in) and used in Okinawan martial arts, while being adopted into Japanese arts such particular bōjutsu. Other staff-related weapons are the jō, which is 1.2 m (47 in) long, and the hanbō (half bō, known as tahn bong in Korea), which is 90 cm (35 in) long.
The Japanese martial art of wielding the bō is bōjutsu. The basis of bō technique is te, or hand, techniques derived from quanfa and other martial arts that reached Okinawa via trade and Chinese monks. Thrusting, swinging, and striking techniques often resemble empty-hand movements, following the philosophy that the bō is merely an "extension of one’s limbs". Consequently, bōjutsu is often incorporated into other styles of empty hand fighting, such as karate. The "bō" is also used as a spear and long sword in some of its motions, such as upward swing and slashing motion across the body as well as extensions by gripping one end and thus increasing its length as thus making it similar to a spear.
The bō is typically gripped in thirds, and when held horizontally in front, the right palm is facing away from the body and the left hand is facing the body, enabling the staff to rotate. The power is generated by the back hand pulling the staff, while the front hand is used for guidance. Bōtechnique includes a wide variety of blocks, strikes, sweeps, and entrapments.