Definition of "key-ring" []

• A finger-ring from which projects a tongue or blade which is either fixed or movable on a hinge, and serves as the key to a lock. Such key-rings were formerly common, and were often of rich design. (noun)
• A ring used for keeping a number of keys together by being passed through their bows. (noun)

The Century Dictionary (Public Domain)

• "My key for my smaller lockbox is on my car key-ring."
• "And with that he threw the key-ring, and our rings, with all his might, as far as he could into the deep."
• "He took from his pocket a key-ring — and drew a ring that he always wore from his finger, and he took a small ring I had."