ju·jit·su also ju·jut·su or jiu·jit·su or jiu·jut·su 
(j-jĭts)
(j-jĭts)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 jūjutsu : jū, soft; see JUDO + jutsu, technique (from Early Middle Chinese ʑwit).]