1) Carabiner 2) Everyday German sporting term 3) Everyday German military term 4) Fastener 5) Fastening 6) Familiar German military term 7) Familiar German sporting term 8) Fixing 9) German sporting term 10) German military term 11) Holdfast 12) Hoop 13) Ring 14) Snap ring 1) Carabiner 
steel link with clip on side used in mountaineering
A karabiner is a metal, oval or D shaped coupling link used in conjunction with ropes in mountaineering. It has a spring-operated clip which may also have a screw fastening to prevent accidental opening.
metal loop used for joining bits of climbing equipment, or crab for short.
carabiner.