What is the meaning of cult?

noun

• Followers of an exclusive system of religious beliefs and practices.
• An interest followed with exaggerated zeal.
  • usage: "he always follows the latest fads"; "it was all the rage that season"
  • synonyms: fad, craze, furor, furore, rage
• Followers of an unorthodox, extremist, or false religion or sect who often live outside of conventional society under the direction of a charismatic leader.
• A religion or sect that is generally considered to be unorthodox, extremist, or false.
  • usage: "it was a satanic cult"
• A system of religious beliefs and rituals.
  • usage: "devoted to the cultus of the Blessed Virgin"
  • synonyms: cultus, religious cult