0 an object used for attaching two things, for example by a climber for attaching a rope to a belt. It is oval or like a letter D in shape, with a part that opens and closes. -- 连接两件物体的扣（如登山扣）
I unclipped my carabiner from the rope. 我从绳索上松开了登山扣。
In most modern situations the traverser is secured to the line through some combination of climbing harness, webbing, carabiner, and/or pulleys.
If either anchor fails, the free carabiner will remain attached to the cord.
Most practitioners run the climbing rope through two screwgate carabiners attached to the anchor, to provide backup in case one becomes undone.
At this point the climbing rope can be attached to a sling and carabiner at the end of the stem.
Belay devices usually attach to the harness of the belayer via a carabiner, and are usually made of aluminium or an alloy.
One team member had to lower his or her teammate into the crevasse; the lowered teammate then had to attach a carabiner to the mountaineer.
A quickdraw consists of two non-locking carabiners connected together by a short, pre-sewn loop of webbing.
Ropes are usually rigged using bolts, slings, and carabiners.
