Noun | 1. | ![]() OAS, Organization of American States - an association including most countries in the western hemisphere; created in 1948 to promote military and economic and social and cultural cooperation Central America - the isthmus joining North America and South America; extends from the southern border of Mexico to the northern border of Colombia Salvadoran capital, San Salvador - the capital and largest city of El Salvador; has suffered from recurrent earthquakes Santa Ana - a city in western El Salvador |