A continent in the western hemisphere connected to North America by the Isthmus of Panama WordNet 3.0 & Open English WordNet

South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. Wikipedia

Continent Wikidata

A continent in the southern part of the western hemisphere, astride the equator and the Tropic of Capricorn, bordered by the Caribbean Sea to the north and between the Atlantic and Pacific Oceans, connected to North America by the Isthmus of Panama, and divided into twelve countries: Argentina, Bolivia, Brazil, Chile, Columbia, Ecuador, Guyana, Paraguay, Peru, Suriname, Uruguay and Venezuela. OmegaWiki

The continent that is the southern part of the Americas. It is east of the Pacific Ocean, west of the Atlantic Ocean, south of North America and north of Antarctica. Wiktionary

Continent that is the southern part of the Americas. Wiktionary (translation)