firmly planted stance; solid lower-body posture
Used in sumo and judo for a stable, grounded stance where the legs are set firmly, making the wrestler hard to push over. Often implies resilience and the ability to withstand an opponent's attack.
He withstood his opponent's attack with a solid, firmly planted stance.
Compound of 二枚 (two flat objects) and 腰 (hips/lower back). The exact derivation is uncertain, but it likely refers to the idea of having a second, stable 'layer' at the hips, giving extra strength and stability.