Noun
(Norse mythology) giant who lives in the roots of Yggdrasil and guards the well of wisdom
Source: WordNetLarrington says that "Odin exchanged one of his eyes for wisdom from Mimir, guardian of the well, while Heimdall seems to have forfeited his ear." Source: Internet
Mimir, knowing the value of the water, refused unless Odin offered one of his eyes. Source: Internet
The Loss of Odin's Eye Mimir was an ancient being, notorious for his unparalleled wisdom. Source: Internet