扣环
近义词与同义词
按词义分组列出，使用时请结合具体语境。
an oblong metal ring with a spring clip; used in mountaineering to attach a rope to a piton or to connect two ropes
a fastener (as a buckle or hook) that is used to hold two things together
fastener that fastens together two ends of a belt or strap; often has loose prong