What is jitsu?

Some articles on jitsu:

Stephen G. Hall - Athletic Career
... mixed martial arts and Brazilian jiu-jitsu fighters ... an expert in combatives, kickboxing and Brazilian Jiu-Jitsu ... as a heavyweight in submission grappling and Brazilian Jiu-Jitsu and was ranked 5th in the United States in 2012 out of about 5,000 fighters in his age division ...
Braulio Estima
... Estima is a 3rd degree black belt in Brazilian Jiu-Jitsu and professional mixed martial artist ... his grappling career, he has won in many Brazilian Jiu-Jitsu tournaments across the world, such as the Mundials, ADCC, Pan American Championship, and European ... has made him well respected among other Brazilian Jiu-Jitsu practitioners, such that some consider him one of the top Brazilian Jiu-Jitsu practitioners in the world ...
Luca Atalla
... He is a black belt of Gracie Jiu-Jitsu under Master Carlos “Carlinhos” Gracie Jr ... and won the title of champion and most technical blue belt athlete in the inaugural Jiu-Jitsu World Championship in 1996, in Rio de Janeiro Brazil ... He is the brother of another former Jiu-Jitsu world champion, Roberto “Risada” Atalla, and is married to Maria Guillobel Atalla, a veterinarian and sister of Jiu-Jitsu teacher ...
Cristiane Santos - Championships and Accomplishments - Submission Grappling
... International Brazilian Jiu-Jitsu Federation 2012 IBJJF World Jiu-Jitsu Championship Female Purple Belt Gold Medalist 2011 IBJJF World Jiu-Jitsu Championship Female Purple Belt ...
Cassio Werneck - Championships
1st place, 2012 World Jiu-Jitsu No-Gi Championship 1st place, 2012 World Jiu-Jitsu Championship Masters Seniors 1st place, 2010 Pan American Jiu-Jitsu Championship 1st place, 2008 Pan American Jiu-Jitsu Middle ... Open, Brazilian Jiu-Jitsu 1st place, 2002 Brazilian Cup 3rd place, 2001 Pan American Jiu-Jitsu Championship 3rd place, 2000 Pan American Jiu-Jitsu Championship 3rd place, 1999 Brazilian National Championship 3rd ...