jumar

noun mountaineering
  1. 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
verb (intr)
  1. to climb (up a fixed rope) using jumars

Word Origin for jumar

C20: Swiss name
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Examples from the Web for jumar

Historical Examples of jumar