OAS, Organization of American States - an association of countries in the western hemisphere; created in 1948 to promote military and economic and social and cultural cooperation

South American country, South American nation - countries occupying the South American continent

Triple Frontier - the border area where Argentina and Brazil and Paraguay meet; an active South American center for contraband and drug trafficking and money laundering; a suspected locale for Islamic extremist groups

Asuncion, capital of Paraguay - the capital and chief port of Paraguay

Parana, Parana River - a South American river; tributary of Rio de la Plata

Guaira, Guaira Falls, Sete Quedas - a great waterfall on the border between Brazil and Paraguay

South America - a continent in the western hemisphere connected to North America by the Isthmus of Panama

Paraguayan - a native or inhabitant of Paraguay