Definition: A 900 is a freestyle snowboarding trick where the rider spins 900 degrees, or 2.5 full rotations. The spin may be done in either direction (backside or frontside).
Pronunciation: [nahyn]-[huhn-drid]
Also Known As: 9, nine
Examples:
(From TGR's "Anomaly"): "When we arrived in Whistler, we met up with Eero Niemela, who totally stomped a switch backside 900."