Proper noun
(astronomy) A moon of Saturn.
(Norse mythology) The first creature to come into being and the ancestor of all jötnar. Upon his death, the gods fashioned the world from his body.
Source: en.wiktionary.orgNorse mythology also holds that the entire world of men was created from the flesh of Ymir, a giant of cosmic proportions, which name is considered by some to share a root with the name Yama of Indo-Iranian mythology. Source: Internet
The Poetic Edda poem Völuspá details that the dwarfs were the product of the primordial blood of the being Brimir and the bones of Bláinn (generally considered to be different names for the primordial being Ymir ). Source: Internet