chock 
Metal device that is inserted into a crack in the rock face and held in place by tension; it is extended by a steel cable to which a carabiner can snap on.
seat harness 
Accessory connected to the belay rope that consists of a number of straps to support the climber’s thighs and pelvis.
expansion piton 
Piton that is driven into a hole previously made in the rock.
piton 
Metal spike with a blade that is driven into a crack in the rock face; it ends in an eye to which a belay rope can be attached with a carabiner.
eye 
Hole that is large enough for a carabiner to snap on so that a rope can be attached to the piton.
tubular ice screw 
Threaded metal tube that is screwed into ice or hard-packed snow to help with belaying and advancing.