(grammar, obsolete) A word that can be used to refer to a person, animal, place, thing, phenomenon, substance, quality, or idea; one of the basic parts of speech in many languages, including English.

(grammar) a noun which is used attributively to modify or qualify another noun, in a different way to an adjective. For example, in railway station, railway is used as a modifier to describe what kind of station it is.

plural of noun modifier

In Arabic and other Semitic languages, a noun formed from a root and expressing the sense of "place of X".

(grammar) a subordinate clause which functions as a subject or object of the main clause

(grammar, archaic) Synonym of proper noun

(grammar) The quality of a word or phrase behaving as a noun.

(linguistics) A type of third-person singular neopronoun constructed (often as an in-group identifier or nonce word) from a referent noun.