noun
strong hips; tenacious lower body
Refers to physical lower-body strength and stability, especially in sumo or martial arts. Also used figuratively for persistence or resilience in difficult situations.
彼は粘り腰で相手を土俵の外に押し出した。
He pushed his opponent out of the ring with his tenacious lower-body strength.
交渉では粘り腰がものを言う。
In negotiations, persistence pays off.