Jötunn

A Jotun, in Norse mythology, is a giant, one of a mythological race with superhuman strength, described as standing in opposition to the gods, although they frequently mingled with or were even married to these, both Æsir and Vanir. Their stronghold is known as Utgard, and is situated in Jötunheimr, one of the nine worlds of Norse cosmology, separated from Midgard, the world of men, by high mountains and dense forests. When living in worlds other than their own, they seem to prefer caves and dark places.
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Noun
1. (Norse mythology) one of a race of giants often in conflict with the Aesir
(synonym) Jotun
(hypernym) giant
(classification) Norse mythology

Jotunn, Jotun (Icelandic) Giant; in the Norse Edda the giants represent the material spheres in which gods embody, thus enlightening those dark worlds while gaining there the "mead" of experience. There are giants of varying types and degrees. The ultimate source of matter (Sanskrit mulaprakriti) is named Mimir in the Edda. Other giants represent periods during which the gods animate a world, race, or other living being. Each named giant is a life period or material embodiment of a god; it exists for as long as the energizing deity is embodied, and dies, slain by the hammer of Thor, at the end of that period. Within the long span of a giant's life a number of giantesses, "daughters" of the giant, represent smaller cycles, races or subraces of the giant, their father. A giant is thus both a manifest entity and the lifetime of such an entity, thus paralleling the aeons of Greek mythology.
Distinct from the living giants are the thurses or frost giants, symbolizing periods of nonlife when the gods are absent in their supernal heavens.