back mount bjj definition
Brazilian jiu-jitsu. Brazilian jiu-jitsu (/dÊuËËdÊÉªtsuË/; Portuguese: [ËÊiw ËÊitsu], [ËÊu ËÊitsu], [dÊiËu dÊiËtsu]) (BJJ; Portuguese: jiu-jitsu brasileiro) is a martial art, combat sport system that focuses on grappling and especially ground fighting.