See Also: jumar(dictionary)

jumar (iou)



jumar noun & verb. M20.
[Origin unkn.: orig. Swiss.]
Mountaineering.
A. noun. A clamp which when attached to a fixed rope automatically tightens when weight is applied and relaxes when it is removed, thus facilitating the climbing of the rope; a climb using such clips. M20.
b. verb intrans. Climb with the aid of jumars. M20.