halfpipe


half·pipe

or half pipe H0024350 (hăf′pīp′, häf′-)n.1. A smooth-surfaced structure shaped like a trough and used for stunts in sports such as in-line skating and snowboarding.2. A sports event in which a halfpipe serves as the course or area of competition.

half•pipe

(ˈhæfˌpaɪp, ˈhɑf-)
n. a course shaped like the bottom half of a pipe, used for performing skateboarding or snowboarding stunts. Also, half′-pipe`. [1985–90, Amer.]