The definition of half-pipe is "A half-moon-shaped chute or ramp used by snowboarders and skateboarders to provide a takeoff for a jump." (Option C)
In gravity-defying extreme sports like snowboarding, skateboarding, skiing, freestyle BMX, skating, and scooter riding, half-pipes are commonplace.
Thus, it is correct to state that the definition of half-pipe is "A half-moon-shaped chute or ramp used by snowboarders and skateboarders to provide a takeoff for a jump."
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