NOUN: noun Definition. Nouns are a part of speech typically denoting a person, place, thing, animal or idea. The NOUN tag is intended for common nouns only. See PROPN for proper nouns and PRON for pronouns.. Russian nouns have the lexical feature ru-feat/Gender.Furthermore, the nouns inflect for ru-feat/Number and ru-feat/Case.. A verbal noun can be derived productively from almost every verb ...