Source : WordNet®

abseil
     n : a descent down a nearly vertical surface by using a doubled
         rope that is coiled around the body and attached to some
         higher point
     v : lower oneself with a double rope coiled around the body from
         a mountainside; "The ascent was easy--roping down the
         mountain would be much more difficult and dangerous";
         "You have to learn how to abseil when you want to do
         technical climbing" [syn: {rappel}, {rope down}]