Source : Webster's Revised Unabridged Dictionary (1913)

Creditor \Cred"it*or\ (kr?d"?t-?r), n. [L.: cf. F. cr?diteur.
   See {Credit}.]
   1. One who credits, believes, or trusts.

            The easy creditors of novelties.      --Daniel.

   2. One who gives credit in business matters; hence, one to
      whom money is due; -- correlative to debtor.

            Creditors have better memories than debtors.
                                                  --Franklin.

Source : WordNet®

creditor
     n : a person to whom money is owed by a debtor; someone to whom
         an obligation exists [ant: {debtor}]