Shinai
weapon used in kendo
A shinai (竹刀) is a Japanese sword typically made of bamboo used for practice and competition in kendō. Shinai are also used in other martial arts, but may be styled differently from kendō shinai, and represented with different characters. The light, soft wood used in a shinai distinguishes it from other wooden swords such as a bokuto (木刀), usually called a bokken (木剣) outside Japan, which is generally made of heavier, sturdier wood.
History
The earliest use of a bamboo weapon to train with instead of a sword is credited to Kamiizumi Nobutsuna (1508–1572?) of the Shinkage-ryū. The modern shinai, with four slats of bamboo, is generally credited to Nakanishi Chuzo Tsugutate (died 1801) of Nakanishi-ha Ittō-ryū. The shinai was developed in an effort to reduce the number of practitioners being seriously injured during practice, making a practice weapon that was less dangerous than bokutō (木刀), the hard wooden swords they were previously using. This is also the motivation behind the development of bōgu (防具), the armour that protects the kendoka.
Due to its lighter weight compared to a bokken or a metal katana, a shinai can be wielded in a fashion that allows quicker strikes than would be practicable with a heavier sword. This also makes shinai popular in producing movies and television shows; a prop shinai with a thin metal covering can look similar to a metal sword, while allowing cinematic, showy strikes that are nevertheless fairly safe to perform.
Etymology
The word "shinai" is derived from the verb shinau (撓う), meaning "to bend, to flex", and was originally short for shinai-take (flexible bamboo).
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