RhymeZone: overworld definitions

Definitions of overworld:

noun: The celestial world.
noun: The community of law-abiding citizens.
noun: (video games) An overarching map or region connecting various disparate towns, dungeons, or stages, usually represented on it by icons.
noun: (video games) The portion of a game that is set above ground, as opposed to underground caves etc.

(Definitions from Wiktionary)