Bolt: Stout metal pin drilled in the rock of steep routes to provide permanent protection for climbers.
Buttress: A rock formation that projects out from the line of a face.
Dyno: Short for "dynamic"; a gymnastic upward leap for a distant hold.
Free Solo: To climb with no protective devices whatsoever, relying solely on strength, agility, technique and an ability to accept or ignore the consequences of long falls from high places.
Base Camp: The lowest, largest (and most luxurious) fixed camp on a major ascent.
Chimney: A crack large enough to climb inside of.
Boulder: To climb short, hard routes on low-lying rocks without protective gear.
Crampons: Spiked metal devices which attach to climbing boots to provide purchase on ice and firm snow slopes.
Face Climbing: Ascending rock that is predominantly made up of finger pockets and thin edges.