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 Windward Islands, Windward Isles - a group of islands in the southeastern West Indies; the southern part of the Lesser Antilles capital of Grenada, St. George's - the capital and largest city of Grenada Grenadian - a native or inhabitant of Grenada |