karabiner

English Thesaurus

1. an oblong metal ring with a spring clip; used in mountaineering to attach a rope to a piton or to connect two ropes (noun.artifact)

hypernym	:	fastener, fastening, fixing, holdfast,
definition	:	restraint that attaches to something or holds something in place (noun.artifact)

hypernym	:	hoop, ring,
definition	:	a rigid circular band of metal or wood or other material used for holding or fastening or hanging or pulling (noun.artifact)