- a part of the Atlantic Ocean bounded by Central America, the West Indies, and South America. About 750,000 sq. mi. (1,943,000 sq. km); greatest known depth 22,788 feet (6946 meters).
- an almost landlocked sea, part of the Atlantic Ocean, bounded by the Caribbean islands, Central America, and the N coast of South America. Area: 2 718 200 sq km (1 049 500 sq miles)