Persian language, regarding the extension and richness is one of those languages which has the possibility to express meaning in different aspects and ways. One of the effective tools in doing that is conjunctions and their meanings. Conjunctions in Persian cause brevity in discourse, and among them “vav” (and) is highly important. In this research, the potentials of this conjunction, its various and numerous functions in the creation of meaning, and artistic innovation in the structure of literary and rhetoric texts will be explored. Obviously, the approach adopted in this research is a semantic one, and not grammatical. In this article Seventeen functions of “vav”, for example, elimination, interpretation, conclusion, quality, causality, emergency, and … will be studied and documented using sufficient examples. The main question is that “what were the different meanings of “vav” in ancient texts, and how knowing these meanings can help us with understanding, and interpreting these texts?” This research is a detailed and authentic answer to this question.