Ouroboros noun
Ou·ro·bo·ros | \ ˌju̇r-ō-ˈbȯr-əs \
variants: or ouroboros or less commonly Uroboros or uroboros
Definition of Ouroboros
1. a circular symbol that depicts a snake or dragon devouring its own tail and that is used especially to represent the eternal cycle of destruction and rebirth
2. usually ouroboros or less commonly uroboros : something (such as a never-ending cycle) that is likened to or suggestive of the Ouroboros symbol