Central America - the isthmus joining North America and South America; extends from the southern border of Mexico to the northern border of Colombia

dry land, ground, solid ground, terra firma, land, earth - the solid part of the earth's surface; "the plane turned away from the sea and moved back over land"; "the earth shook for several minutes"; "he dropped the logs on the ground"

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

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