There were many kinds of dictionaries in ancient Japan. Therefore, without highly specialized knowledge, it is quite difficult for users to interpret their contents. Furthermore, users have been compelled to seek the necessary information based on visual observation of the dictionaries. To effectively find the required information within a complex description, a strict definition of the contents is required.This paper thus proposes a model for such a structured description and discloses the tagged data by using Wamyō-Ruijushō, a representative dictionary of the Heian Era in Japan.