1. (noun)South the region of the United States lying to the south of the Mason-Dixon line
2. (noun)Confederacy, Confederate States, Confederate States of America, South, Dixie, Dixieland the southern states that seceded from the United States in 1861
3. (noun)south, due south, southward, S the cardinalcompasspoint that is at 180 degrees
4. (noun)south a location in the southern part of a country, region, or city