Wiktionary
n. (context sports English) A variety of basketball in which trampolines are positioned in front of each net
Wikipedia
SlamBall is a form of basketball played with four trampolines in front of each net and boards around the court edge. The name SlamBall is the trademark of SlamBall, LLC.
Professional SlamBall games aired on television with Spike TV for two seasons in 2002–2003, and the POWERade SlamBall Challenge was aired on CSTV, now CBS Sports Network, in 2007. SlamBall returned in August 2008, airing on Versus, now NBC Sports Network, and CBS. The 2008 SlamBall season aired at one point on weekends on Cartoon Network. Slamball was shown on One HD in Australia during 2009. SlamBall held its first major international tournament in China in 2012.