half-pipe

• halfpipe, half pipe

half- +‎ pipe

half-pipe (plural half-pipes)

1. (skateboarding, snowboarding, skiing, BMX, rollerskating, kickscootering, etc.) A structure used to perform tricks, approximately semicircular in cross-section, resembling the bottom half of a cylinder lying down.
   • 2009 January 24, Randy Starkman, “Silver medal eases pain for Batchelor at world championships”, in Toronto Star‎:

     But the kid who washed windows for $2 an hour when he was 8 so he could buy his first snowboard served notice he could be a contender at the 2010 Vancouver Olympics with a silver medal yesterday in men's halfpipe.