In Germanic cosmology, Midgard (an anglicised form of Old Norse Miðgarðr; Old English Middangeard, Old Saxon Middilgard, Old High German Mittilagart, and Gothic Midjun-gards; "middle yard", "middle enclosure") is the name for Earth (equivalent in meaning to the Greek term οἰκουμένη : oikouménē, "inhabited") inhabited by and known to humans in early Germanic cosmology. The Old Norse form plays a notable role in Norse cosmology. Etymology.
https://en.wikipedia.org/wiki/Midgard