The purpose of this paper is to classify Korean symbolic words according to the semantic domain. The process and methodology of this research is as follows; 1) Comparing the definitions and their related information of symbolic words in the various dictionaries. 2) Constructing an Excel database by dismantling Classification Dictionary of Korean Onomatopoeic and Mimetic Words . 3) Analyzing Standard Korean Great Dictionary and obtaining the material such as North Korean language, dialects, errata, and lists of similar type words. 4) Proposing a semantic description model to implement the consistent methodology of meaning clarification. Focusing on the problems of semantic-domain-based classification of symbolic words proposed by the existing dictionaries, major domains are reclassified as follows; 1) Subclassifying 930 ``symbolic words related to the solid`` out of 2116 onomatopoeic words. 2) Dividing ``sense`` into ``sense``, ``emotion``, and ``perception`` and establishing 8 upper categories for 40 domains of ``character``. 3) Reclassifying the ``movement`` domain containing 1,650 symbolic words out of 2,639 mimetic words. 4) Establishing domain layers for ``speaking shape`` in the sub-layer of movement. The major limitation of current classification system is the lack of understanding about top-bottom concept. The discrimination of symbolic words that belong to the same semantic domain is continuously required.