What is the meaning of genius?

noun

• Someone who has exceptional intellectual ability and originality.
  • usage: "Mozart was a child genius"; "he's smart but he's no Einstein"
  • synonyms: mastermind, brain, brainiac, Einstein
• Unusual mental ability.
  • synonyms: brilliance
• Someone who is dazzlingly skilled in any field.
  • synonyms: ace, adept, champion, sensation, maven, mavin, virtuoso, hotshot, star, superstar, whiz, whizz, wizard, wiz
• Exceptional creative ability.
  • synonyms: wizardry
• A natural talent.
  • usage: "he has a flair for mathematics"; "he has a genius for interior decorating"
  • synonyms: flair