key ring

Finally, pieces of the key-ring were fitted in bands around the bone, through notches cut in the ends of the steel blade.

And with them goes a key-ring on which these keys must be strung.

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.

On this occasion Mr. Braden used the latter key, because he had changed his wet garments and left his key-ring with them.