Examples from the Web for world language
Perhaps the Slovenes told them that Welsh is not a world-language.
So we looked it up in Esperanto—the only attempt at a world-language of which we know, and in which my father is interested.A Scout of To-day|Isabel Hornibrook
What the Austrians said was that German was a world-language and that it was a fad to want to learn Slovene.
But apparently it was not till about 300 years ago that philosophers began to think seriously about a world-language.International Language|Walter J. Clark