What is the meaning of sun?

noun

• The star that is the source of light and heat for the planets in the solar system.
  • usage: "the sun contains 99. 85% of the mass in the solar system"; "the Earth revolves around the Sun"
• The rays of the sun.
  • usage: "the shingles were weathered by the sun and wind"
  • synonyms: sunlight, sunshine
• A person considered as a source of warmth or energy or glory etc.
• Any star around which a planetary system revolves.
• First day of the week; observed as a day of rest and worship by most Christians.
  • synonyms: Sunday, Lord's Day, Dominicus

verb

• Expose one's body to the sun.
  • synonyms: sunbathe
• Expose to the rays of the sun or affect by exposure to the sun.
  • usage: "insolated paper may turn yellow and crumble"; "These herbs suffer when sunned"
  • synonyms: insolate, solarize, solarise