Thrymheimr. Thjasse's and Skade's dwelling. Thrymheim.
Thrymr. The giant who stole Thor's hammer and demanded Freyja as a reward for its return. Thrym.
Thokk. The name of a giantess (supposed to have been Loke in disguise) in the myth of Balder. Thok.
U
Ulfrun. One of Heimdal's nine giant mothers. Ulfrun.
Ullr. The son of Sif and stepson of Thor. His father is not named. He dwells in Ydaler. Uller.
Urdarbrunnr. The fountain of the norn Urd. The Urdar-fountain. The weird spring.
Urdr [Eng. weird]. One of the three norns. The norn of the past. Urd.
Utgardar [The out-yard]. The abode of the giant Utgard-Loke. Utgard.