world tree

English

Noun

world tree (plural world trees)

1. In various mythologies, an enormous tree that connects or forms an axis between different realms or worlds and serves as a symbol of the universe's structure and interconnectedness.
   • 2017, Neil Gaiman, Norse Mythology, Bloomsbury Publishing, page 1:

     He hung from the world-tree, Yggdrasil, hung there for nine nights.