Pronunciation: (noun), [key] Gram.
any member of a class of words that are formally distinguished in many languages, as in English, typically by the plural and possessive endings and that can function as the main or only elements of subjects or objects, as cat, belief, writing, Ohio, darkness. Nouns are often thought of as referring to persons, places, things, states, or qualities.
Also,noun'al.of or resembling a noun.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.