Middle-Earth.acc
middanġeardN (masc, a-stem)the middle dwelling (between heaven and hell), the earth, worldSource: https://bosworthtoller.com/22797Attested in Caedmon's HymnInflected formsmiddangeardes 'Middle-Earth.gen' (oe-gen) in Sellic SpellParadigms
the middle dwelling (between heaven and hell), the earth, world