canyoning
can·yon·ing / ˈkænjənɪŋ ; ˈkænjənɪŋ /
also can·yon·eer·ing / kanjəˈnɪrɪŋ ; kanjəɪərɪŋ / AmEnoun U
1. a sport in which you walk and swim along a fast-moving river at the bottom of a canyon〔包括在谷底激流健行、游泳等的〕溪降运动