What is the meaning of fantasy?

noun

• Imagination unrestricted by reality.
  • usage: "a schoolgirl fantasy"
  • synonyms: phantasy
• Fiction with a large amount of imagination in it.
  • usage: "she made a lot of money writing romantic fantasies"
  • synonyms: phantasy
• Something many people believe that is false.
  • usage: "they have the illusion that I am very wealthy"
  • synonyms: illusion, phantasy, fancy

verb

• Indulge in fantasies.
  • usage: "he is fantasizing when he says he plans to start his own company"
  • synonyms: fantasize, fantasise