%% WorldMap's definition was renamed to OverworldNotToScale per TRS verdict. If you missed it, the thread was here: http://tvtropes.org/pmwiki/posts.php?discussion=1335282740012552800
%% (Please update your watchlists.)
A "World Map" is, well, any depiction of a region or setting. There are several tropes associated with this term - perhaps you were thinking about one of them instead?
* FantasyWorldMap: The world map of any ConstructedWorld, a popular inclusion in published fantasy literature.
* LevelMapDisplay: NPC's may give you an item called a "world map". You can peruse it at your leisure, but that's all.
* TheOverworld: A fully playable world map, functions like an actual VideoGame level: You can freely explore it while travelling between areas.
** OverworldNotToScale: A scaled-down, birds-eye view (or map) of the world (Popular in "eastern" style RPG's.)
* PointAndClickMap: A VideoGame map that functions like a menu screen: Click on a desired location to travel there, WarpWhistle-style. (Popular in "western" style RPG's.)
See also MapTropes in general.