noun
valley drop throw; tani otoshi
A judo throwing technique classified as a hand technique (te-waza). The name literally means 'valley drop'.
谷落としは、相手の背後から足をかけて倒す技です。
Tani otoshi is a technique where you trip the opponent from behind.
彼は谷落としで一本を取った。
He scored an ippon with a valley drop throw.
Compound of 谷 (tani, 'valley') and 落とし (otoshi, 'dropping'), describing the motion of dropping the opponent into a valley-like space.