carabiner
1. [ noun ] an oblong metal ring with a spring clip; used in mountaineering to attach a rope to a piton or to connect two ropes
Synonyms: snap_ring karabiner
Related terms: hoop fastener
Similar spelling:   carabineer
  carabinier
  carbine
  Carbin
  caravan
  caravanning
  caravan_inn
  caravanserai