What "carabiner" means in rock climbing

In rock climbing, a carabiner is a metal loop device that climbers use to connect different pieces of equipment such as ropes, harnesses, and anchors. Carabiners can be locking or non-locking, and come in various shapes, sizes, and materials. The use of a carabiner ensures that the climbing equipment stays securely connected, preventing any accidental disconnection that could lead to a fall or other accidents.