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Noun: jumar
  1. (climbing) a rope clamp that tightens when weight is applied, allowing the rope to be climbed
    "The climber attached her jumar to the fixed rope for the ascent"
Verb: jumar
  1. (climbing) climb using a jumar
    "They jumared up the last pitch to reach the summit quickly"

Derived forms: jumared, jumaring, jumars

Encyclopedia: Jumar