Definitions for "Jumar"
A mechanical device that attaches to a rope and will only move one way along the rope. Used for climbing up ropes to escape from crevasses. Katabatic Wind flowing downhill in response to gravity, e.g. masses of cold, dense air flowing down the seaward slopes of the Antarctic continent, forming strong local winds.
A type of rope ascending device.
A technique of climbing a rope with a mechanical device that will slide up a rope, but lock on the rope as you pull down.