The word "Yghe" does not have a clear etymology or official definition. It appears to be a variation or misspelling of the word "Yggdrasil", which is a mythical tree in Norse cosmology. Yggdrasil is often associated with the concept of the universe or the world tree. However, "Yghe" itself may not have any widely recognized meaning or origin. It might be a personal or fictional term that lacks established usage or historical background.