A pitch is usually half the length of the standard rope. Piton - A piece of metal shaped somewhat like a railroad spike. Pitons are driven into the crack on a rock face and have an eye through which a carabiner and rope can be attached. Plastic - the term used for indoor climbing on artificial climbing walls. Protection or pro - Apparatus used to protect climbers from needlessly extensive falls, especially the ultimate fall to the ground.
Protection includes camming devices, friends, bolts and pitons.
Prusik -a technique for climbing rope. Prusik knots were invented by Karl Prusik many years ago and can slide freely when unweighted but won't slip when weight is applied to it. The term is now used to describe rope climbing with jumar ascenders. The chosen combination of gear, including chocks and carabiners, usually carried by the leader and hung from a sling over his or her shoulder. Racks look like mega-size charm bracelets or a carpenter's belt run amok.