carabiner
UK[ˌkærəˈbiːnə]US[ˌkerəˈbiːnər]
n
A metal ring with a spring-loaded gate, used to quickly and reversibly connect components, especially in climbing and mountaineering.
Etymology
The word 'carabiner' entered English in the early 20th century from the German term 'Karabinerhaken', meaning 'carbine hook'. This German term is a compound of 'Karabiner' (carbine, a type of short rifle) and 'Haken' (hook). The connection stems from the device's original use by cavalry and military climbers, who would use a similar hook to attach their carbines to a strap. Over time, the specialized hook was adapted for safety in recreational climbing. Thus, the modern abstract meaning of a secure connecting device evolved from a military tool named for its association with a firearm.
Analysis
The word is a loanword from German, adopted as a single unit into English. Its spelling and form are not productively segmented using English morphemes.
Examples
The climber securely clipped the rope into her carabiner.
Always check that the gate of your carabiner is locked before putting weight on it.
His keychain was attached to his backpack with a small, lightweight carabiner.