2 words in this vocabulary list
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
noun a hormone secreted by the adrenal glands, especially in conditions of stress, increasing rates of blood circulation, breathing, and carbohydrate metabolism and preparing muscles for exertion