
1) Knot of modern origin
Found on
https://www.crosswordclues.com/clue/prusik

A Prusik k is a friction hitch or knot used to put a loop of cord around a rope, applied in climbing, canyoneering, mountaineering, caving, rope rescue, and by arborists. The term Prusik is a name for both the loops of cord and the hitch, and the verb is `to prusik`. More casually, the term is used for any friction hitch or device that can grab .....
Found on
http://en.wikipedia.org/wiki/Prusik
(prussik, prussick, prussic) A sliding friction knot used to anchor a small diameter rope to a large diameter rope, also, to ascend a rope with prusik slings. The knot bears the last name of the Austrian climber who devised it.
Found on
http://santiamalpineclub.org/mountain/climbing/terms/

A loop of thin cord, itself looped several times around a thicker rope. Used by climbers to attach themselves or anything else to a rope via a carabiner in such a way that it can be slid along the rope but, if weight is put on it, it locks in place through friction. Also verb: to climb up a rope using 2 prusiks alternately, one attached to the clim...
Found on
http://snowheads.com/ski-forum/viewtopic.php?p=1814905

The sliding friction knot developed by Karl Prusik. Made by wrapping a loop of small-diameter cord around a larger-diameter rope. The loop slides when loosened but holds by means of friction when weighted. Used for ascending fixed ropes and for rescue situations to tie off the climbing rope. Also refers to the act of ascending a fixed rope with pru...
Found on
https://www.rei.com/learn/expert-advice/rock-climbing-glossary.html
No exact match found.