Half-pipe
[haf-pahyp, hahf-] /ˈhæfˌpaɪp, ˈhɑf-/
noun
1.
a half-moon-shaped chute or ramp used by snowboarders and skateboarders to provide a takeoff for a jump.
noun
1.
a structure with a U-shaped cross-section, used in performing stunts in skateboarding, snowboarding, rollerblading, etc
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