Meaning of NOUN in English

[noun] n [ME nowne, fr. AF noun name, noun, fr. OF nom, fr. L nomen--more at name] (14c): any member of a class of words that typically can be combined with determiners to serve as the subject of a verb, can be interpreted as singular or plural, can be replaced with a pronoun, and refer to an entity, quality, state, action, or concept

Merriam-Webster English vocab.      Английский словарь Merriam Webster.