jumar(redirected from jumared)
A device used in ascending a fixed rope, having a springloaded cam that grips the rope when weight is applied but allows free movement upwards when the load is lifted.
[Formerly a trademark.]
(Mountaineering) Also called: jumar clamp a clamp with a handle that can move freely up a rope on which it is clipped but locks when downward pressure is applied
(Mountaineering) to climb up a fixed rope using jumars
[C20: Swiss name]
Past participle: jumared