Korean dictionary tends not to provide proper lexical entry of Korean idioms. This paper seeks to reconsider lexical entry of Korean idioms using symbolic words. Symbolic words can be varied by consonant vowel alternation, derivation or repetition. These morphological characteristics of symbolic words can be applied to reconsider variation of Korean idioms composed with symbolic words. Symbolic words composing idioms show differency in variation with general using. Proper entry informations of idioms should be illustrated in the dictionary for learners for Koreans as foreign language. Informations of lexical entry of Korean idioms are essential to foreign learners so dictionary present proper entry of Idioms. Dictionary of Symbolic words would include the informations discussed in the above.