A bokken (木剣, bok(u), "wood", and ken, "sword") (or commonly as bokutō 木刀 in Japan), is a Japanese wooden sword used for training, usually the size and shape of a katana, but sometimes shaped like other swords, such as the wakizashi and tantō.

Bakuto (博徒) were itinerant gamblers in Japan from the 18th century to the mid-20th century. They were one of the forerunners of the modern Japanese crime gangs known as yakuza.