noun, verb ·Rare ·Advanced level

Definitions

Noun

1. 1
   A device, used to clip on a rope, that tightens when weight is applied, thus allowing the rope to be climbed.

   "Jacob handed her the ATC belay device and jumar."

2. 2
   Alternative form of jumart. alt-of, alternative

Verb

1. 1
   To climb using this device. intransitive

Synonyms

All synonyms

hippotaur

Example

More examples

"Jacob handed her the ATC belay device and jumar."

Etymology

From the name of the Swiss firm Jümar Pangit which manufactured it, in turn from the surnames of Adolf Jüsy and Walter Marti.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.