noun 
(noun)
(noun)n. Abbr. n.
1. The part of speech that is used to name a person, place, thing, quality, or action and can function as the subject or object of a verb, the object of a preposition, or an appositive.
2. Any of the words belonging to this part of speech, such as neighbor, window, happiness, or negotiation.
[Middle English, name, noun, from Anglo-Norman, from Latin nōmen (translation of Greek onoma, name, noun); see n-men- in the Appendix of Indo-European roots.]