Tyr (Old Norse: Týr, pronounced [tyːr]; Hebrew: טיר, Tir) is a god associated with single combat, heroism, and justice in Norse mythology. He is depicted as one-handed, as he sacrificed his arm to bind the monstrous wolf Fenrir. Tyr is often considered a son of Odin, the chief god in Norse mythology, and is associated with the planet Mars. In Old Norse texts, Tyr is frequently referred to as the "Leavings of the Wolf," a kenning that alludes to his sacrifice. His name is also the source of the English day Tuesday, derived from Old English Tīwesdæg and Old Norse Týsdagr. In Germanic mythology, Tyr's equivalent is the god Tiwaz (Old High German: Ziu, Old English: Tīw), who shares similar attributes and associations.