What is the meaning of southern?

adjective

• In or characteristic of a region of the United States south of (approximately) the Mason-Dixon line.
  • usage: "southern hospitality"; "southern cooking"; "southern plantations"
• Situated in or oriented toward the south.
  • usage: "a southern exposure"; "took a southerly course"
  • synonyms: southerly
• Situated in or coming from regions of the south.
  • usage: "the southern hemisphere"; "southern constellations"
• From the south; used especially of wind.
  • usage: "a hot southerly wind"; "southern breezes"; "the winds are southerly"
  • synonyms: southerly