Ouroborus
The ouroboros or uroborus (/ˌ(j)ʊərəˈbɒrəs/, also UK: /uːˈrɒbərɒs/,[2][3] US: /-oʊs/) is an ancient symbol depicting a serpent or dragon[4] eating its own tail. Originating in ancient Egyptian iconography, the ouroboros entered western tradition via Greek magical tradition and was adopted as a symbol in Gnosticism and Hermeticism and most notably in alchemy. The term derives from Ancient Greek: οὐροβόρος,[5] from οὐρά (oura), "tail"[6] + βορά (bora), "food",[7] from βιβρώσκω (bibrōskō), "I eat".[8] The ouroboros is often interpreted as a symbol for eternal cyclic renewal or a cycle of life, death and rebirth. The skin-sloughing process of snakes symbolizes the transmigration of souls, the snake biting its own tail is a fertility symbol. The tail of the snake is a phallic symbol, the mouth is a yonic or womb-like symbol. [9]
https://en.wikipedia.org/wiki/Ouroboros