Definitions for "Onsight"
Keywords:  purest, climb, beta, wil, palmer
Leading a climb with no falls and no "dogging" (hanging on the rope) on the first attempt without any prior knowledge (beta) of its features or difficulties.
Similar to flash climbing a route but without the benefit of any beta. Probably the purest form of climbing.
A clean ascent with no falls, first try, with no prior knowledge of the route.