Abstract: With the functions of highlighting word meanings and enhancing sound forms,reduplicated words describing shapes and appearances are conducive in the study on etymological relations.In Book of Songs exist a great number of reduplicated words,ideal materials to study the meaning and etymological relationship.According to the meaning characteristics and sound forms,the cognates of reduplicated words can be connected initially in the same sensory category.Furthermore,words of the same sensory category can be connected in the second degree depending on meaning interconnection determined by objective laws.Besides,meanings of different sensory categories can be connected in the third degree based on meaning interconnection brought about by synesthesia.Some characteristics and rules can be summarized from the results of the connections.First,the words in visual and audial categories account for the vast majority among all sensory categories of reduplicated words.Second,reduplicated words in the visual category are mainly about the descriptions of measurement,luminosity,length and state (momentum).Third,the number of words describing measurement and state (momentum) is larger than that of luminosity and length,which shows the poets’ special sensation and attention on quantity and state (momentum).Fourth,words of listening,touching,tasting and smelling categories interconnected with words in visual category by the quantitative meaning,rather than the meanings of luminosity and length.It illustrates that the perceptions of vision,listening,touching,tasting and smelling are all about measurement.From the perspective of the perception mechanism of etymology,the meaning interconnection and synesthesia are of the same psychological perception at the beginning of language generation,rather than the metaphor or mapping after its occurrence.

Key words: Book of Songs, reduplicated words, cognates, meaning interconnection, synesthesia