Rappel definition
A descent of a vertical surface, as a cliff or wall, by sliding down a belayed rope that is passed under one thigh and over the opposite shoulder or through a device that provides friction, typically while facing the surface and performing a series of short backward leaps to control the descent.
noun
To descend from a steep height by this method.
verb
A descent by a mountain climber, as down a sheer face of a cliff, by means of a double rope anchored above and arranged around the climber's body so as to control the slide downward.
noun
To make such a descent.
verb
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