1. (noun)rappel, abseil (mountaineering) a descent of a vertical cliff or wall made by using a doubled rope that is fixed to a higher point and wrapped around the body
2. (verb)rappel, abseil, rope down lower oneself with a 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"