1. A mechanical ascender or clamp used in climbing to grip a rope and allow upward movement.
Usage: climbing/mountaineering term; also called a jumaring device

1. To climb a rope using a jumar or similar mechanical ascender.
Usage: climbing/mountaineering term; often used in the phrase 'jumar up'

Examples

• The climber attached her jumar to the fixed rope before ascending the wall.
• He used a jumar to efficiently climb the vertical pitch without tiring his arms.
• We had to jumar up the rope to reach the next anchor point.
• The guide showed the team how to properly jumar in challenging conditions.
• A good jumar should grip securely and move smoothly along the rope.
• She jumared quickly up the fixed line to catch up with the group.