Brazilian jiu-jitsu (Portuguese: jiu-jitsu brasileiro [ʒiw ˈʒitsu bɾaziˈlejɾu, ʒu -]), often abbreviated to BJJ, is a self-defense martial art and combat sport based on grappling, ground fighting, and submission holds. It is primarily a ground-based fighting style and focuses on taking one's opponent down to the ground, gaining a dominant position, and using a number of techniques to force them into submission via joint locks, chokeholds, or compression locks. Brazilian jiu-jitsu was first developed around 1925 by Brazilian brothers Carlos, Oswaldo, Gastão Jr.
https://en.wikipedia.org/wiki/Brazilian_jiu-jitsu