boardercrossn.
/ˈbɔːdəkrɒs/, U.S. /ˈbɔrdərˌkrɔs/, /ˈbɔrdərˌkrɑs/ Sport.
In snowboarding: a competition in which multiple participants race simultaneously on a downhill course characterized by extreme variations in terrain.
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1991 Skiing Oct. 38/3 Elbows flew, snowboards crashed, crowds cheered, and the first-ever Boardercross competition—which had elements of a snowboard giant-slalom race and a motocross motorcycle event—became an instant hit.
1998 Guardian 29 Jan. ii. 21/5 Boardercross (where four competitors race down a course with jumps and banks) and carving (a terrain-based slalom) are rooted in free-riding.
2000 Sports Afield Feb. 12/3 He's tramped across the globe, competing in everything from half-pipe to bordercross events.
2003 T. Basich Pretty Good for Girl xi. 124 Boardercross..included six riders going down the mountain in an elimination format on a course made up of banked turns and whoop-de-dos.
This is a new entry (OED Third Edition, December 2006; most recently modified version published online December 2021).
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n.1991