The article describes the four-volume “Ethnocultural Dictionary of the Tatar Language”, which was compiled by a team of teachers from the Institute of Philology and Intercultural Communication of Kazan Federal University. This work records the vocabulary of the Tatar language, reflecting the people’s traditional culture, which accumulates information about the surrounding world, living conditions, everyday life, work organization, etc. Such studies are a reliable aid in studying the circumstances and factors of the national culture formation.Ethnocultural dictionaries give a fragmentary idea of the Tatar people’s linguistic picture of the world. To determine the role and place of culturally marked vocabulary selected for the compilation of the dictionary entries, its authors analyzed the dictionaries of the 19th-21st centuries, studied the use of these words as part of phraseological units, proverbs and sayings, as well as their use in songs and works of art. This study of the culturally marked units adds new data to the history of the formation, development and improvement of Tatar material and spiritual culture. The proposed works can serve as a model for compiling ethnocultural dictionaries of other Turkic-speaking peoples; the material, collected in these lexicographic works, will find a worthy place in the dictionaries of concepts of Turkic languages.