A structure used to perform tricks, approximately half the size of a half-pipe.(noun)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "quarter-pipe" in a sentence
"The show was a full force in your face throw down full of back flips, war dances, Dalek-inspired mirrors and a guy in rollerblades jumping off a quarter-pipe ramp."
"On a makeshift half-pipe that was really more like quarter-pipe, local kids were trying snowboarding tricks, their boards clattering as they hit the rails or crashed against fencing."
"The resulting quarter-pipe landed on the March 2006 cover of Transworld Skateboarding ."