足そく刀とう

noun

outer edge of the foot; foot sword

Karate term for the striking surface from the little toe to the heel, used in kicks like 足刀蹴り (sokutō-geri).

• 空から手てでは、足そく刀とうで相あい手ての脇わき腹ばらを蹴ける技わざがある。

  In karate, there is a technique of kicking the opponent's side with the outer edge of the foot.