1) Descend a mountain by rope 2) Descend by rope 3) Descend rock-face by rope 4) Descend using rope 5) Descent 6) Everyday German sporting term 7) Familiar German sporting term 8) German sporting term 9) Go rappeling 10) Rappel 
to descend a rock face using a double rope
In mountaineering, abseil means to descend using a rope.
[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
noun a descent down a nearly vertical surface by using a doubled rope that is coiled around the body and attached to some higher point
(pronounced AB-sail) To make a controlled descent on a fixed rope. The term is typically used in Europe and Australia. See rappel.