Second, if you rummage through old books, you need a dictionary. I suggest you buy the Chinese Dictionary hosted by Xu Zhongshu in one fell swoop and prepare a magnifying glass.
Third, to fully understand the meaning of words, we need to look at the word books Erya, Dialect and Shuowen, as well as the use cases of the old pre-Qin books, the ancient notes of Han and Wei dynasties in the old pre-Qin books, and the glyph research of the inscriptions on bronze inscriptions. In addition, don't blindly think about the part-of-speech analysis and meaning interpretation of big dictionaries and forget the grammar.