rinkrash
n.— «It’s also a violent sport. The Roller Warriors’ website features the “Injury Archive,” a photo gallery of grotesque bruises, facial stitches, knee-surgery images and floor burns—commonly known as rinkrash.» —“All-female roller derby elbows its way in as a legitimate sport” by Rick Neale in Melbourne, Florida USA Today June 17, 2008. (source: Double-Tongued Dictionary)