A proper noun is a noun that is the name of a specific individual, place, or object.
(English)
Pei, Mario A., and Frank Gaynor. 1954.A dictionary of linguistics. New York: Philosophical Library.
Neufeldt, Virginia (editor). 1991.Webster's new world dictionary of American English. 3rd college edition. New York: Prentice Hall. 013949314X.