Definition of "key-chain" []

• A chain fastened at one end to the cheek of a gun-carriage and at the other to the key, to prevent its loss. See cut under gun-carriage.

The Century Dictionary (Public Domain)

• "His cap, his key-chain—none of his possessions had provided comfort—only more pain."
• "Everyone knows about the average coin collector, key-chain -, piggy-bank - or Barbie doll-collector for example."
• "Bloomberg News Art Coviello, RSA's executive chairman Those products include tokens, which can be the size of a credit card or key-chain fob, that are used by employees to access corporate computer networks."