What is the meaning of Noun?

A word that functions as the name of a specific object or set of objects, such as person, animal, place, word, thing, phenomenon, substance, quality, or idea; one of the basic parts of speech in many languages, including English.

Either a word that can be used to refer to a person, animal, place, thing, phenomenon, substance, quality or idea, or a word that modifies or describes a previous word or its referent; a substantive or adjective, sometimes also including other parts of speech such as numeral or pronoun.

An object within a user interface to which a certain action or transformation (i.e., verb) is applied.

To convert a word to a noun.

third person singular possessive; his, hers, its (used with a special class of objects including living things)

son of, daughter of

noun (part of speech; a category of words including substantives or nouns in the strict sense and adjectives)

An appellation.

Alternative form of nom

no

Source: wiktionary.org