1. to descend a vertical surface (such as a cliff or building) using a rope and harness
Usage: British English; North American equivalent is 'rappel'; commonly used in mountaineering and adventure sports

1. an act or instance of descending by abseil; the rope or equipment used for abseiling
Usage: British English; often used in plural when referring to multiple descents

Examples

• The climbers abseils down the steep rock face using specialized equipment.
• She abseils 200 meters from the cliff to reach the base safely.
• The team completed three abseils before reaching the valley floor.
• Rock climbers often abseil after reaching the summit.
• He learned to abseil during his mountaineering course.
• The rescue team abseils into the canyon to retrieve the injured hiker.
• Multiple abseils were required to descend the tall building during the training exercise.