noun a device used to secure a rope in rock climbing or sailing
verb to secure a rope to a fixed point to protect a climber
noun a small crane on a ship or dock used for hoisting and lowering heavy objects, such as boats or anchors
noun 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
verb to descend a vertical surface by means of a double rope secured above and placed around the body, usually in stages