south to south
adj.—Gloss: arbitrary jargon used at the World Bank to indicate migration from one poor country to another. “South to north” indicates migration from a poor country to a rich one. «There are 74 million “south to south” migrants, according to the World Bank, which uses the term to describe anyone moving from one developing country to another, regardless of geography.… (The bank also estimates that 82 million migrants have moved “south to north,” or from poor countries to rich ones.)» —“A Global Trek to Poor Nations, From Poorer Ones” by Jason DeParle in Juan Gómez, Dominican Republic New York Times Dec. 27, 2007. (source: Double-Tongued Dictionary)