Thor. In Scandinavian mythology, the eldest son of Odin and Frigga; strongest and bravest of the gods. He launched the thunder, presided over the air and the seasons, and protected man from lightning and evil spirits. His wife was Sif ("love"); his chariot was drawn by two he-goats; his mace or hammer was called Mjolner; his belt was Megingjard, whenever he put it on his strength was doubled; his palace was Thrudvangr. It contained 540 halls; Thursday is Thor's day. The word means "Refuge from terror."