ˌFirst ˈWorld BrE AmE noun
the First World the rich industrial countries of the world
—first world adjective [always before noun] :
first world economies
⇨ Third World
ˌFirst ˈWorld BrE AmE noun
the First World the rich industrial countries of the world
—first world adjective [always before noun] :
first world economies
⇨ Third World
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012