Uzu - Uzu

Japanese: 烏頭 - うず

〘Noun〙 The root of monkshood. It is poisonous and contains aconitine, a type of alkaloid, and is used for gout, beriberi, as a diuretic, insecticide, and anesthetic. The Ainu used it for hunting as a conger eel (famous for the Kyogen play " Busu" ). [Honsho Wana (around 918)] *Engishiki (927) 37 "New Year's medicine, Chugyo Junreko ( _abbreviated ) Uto 1 ryo 2 bu"

Karasu-gashira [crow head]

〘Noun〙 (Japanese reading of "う頭" (kōtō)) The joint on the outside of a horse's hind leg. Kuwayuki. ※Heike (before the 13th century) vol. 11 "When the salt is boiled in the afternoon, the horse's hind leg sometimes suddenly becomes angry."

Kuwa- yukikuwa... [Kuwa-tou]

〘Noun〙① The sharp joint on the outside of a horse's hind leg. Crow's forehead. [10-volume Wamyosho (around 934)] ② An old name for the plant "Torikabuto (bird helmet)."

Source: The Selected Edition of the Japanese Language Dictionary About the Selected Edition of the Japanese Language Dictionary Information

Japanese:

〘名〙トリカブト類の根。有毒でアルカロイドの一種、アコニチンを含有し、痛風、脚気、利尿剤または殺虫剤、麻酔薬にする。アイヌはぶす（狂言「附子(ぶす)」で有名）として狩猟に使った。〔本草和名（918頃）〕※延喜式（927）三七「元日御薬中宮准_レ此〈略〉烏頭一両二分」