Get the FREE one-click dictionary software for Windows
or the iPhone/iPad and Android apps
Noun: canyoneering  ,kan-yu'neer-ing
Usage: N. Amer (elsewhere: canyoning)
  1. The sport of exploring canyons by rafting, swimming, climbing, etc.
    "They went canyoneering in the Grand Canyon during their adventure holiday";
    - canyoning [Brit, Cdn]

Encyclopedia: Canyoneering