Tonbokiri
The Tonbokiri is one of three legendary Japanese spears created by the famed swordsmith Fujiwara Masazane, said to be wielded by the daimyō Honda Tadakatsu, a leading general of Tokugawa Ieyasu.
The spear derives its name from the myth that a dragonfly landed on its blade and was instantly cut in two. Thus tonbo and kiri, translating this spear's name as "Dragonfly Cutter".
The weapon, along with :jp:日本号|Nihongō and :jp:御手杵|Otegine, is listed as one of "three great spears" in the Kyōhō Meibutsucho, a listing of famous Koto blades made before the Nanbokucho period and compiled by the Hon'ami family during the Kyōhō era.
