ju·jit·su also ju·jut·su or jiu·jit·su or jiu·jut·su (jōō-jĭt'sōō) n. An art of weaponless self-defense developed in Japan that uses throws, holds, and blows and derives added power from the attacker's own weight and strength.
[Japanese jūjitsu : jū, soft; see judo + jitsu, arts (from Middle Chinese zhwit).]