What is the meaning of pleasure?

noun

• A fundamental feeling that is hard to define but that people desire to experience.
  • usage: "he was tingling with pleasure"
  • synonyms: pleasance
• Something or someone that provides a source of happiness.
  • usage: "a joy to behold"; "the pleasure of his company"; "the new car is a delight"
  • synonyms: joy, delight
• A formal expression.
  • usage: "he serves at the pleasure of the President"
• An activity that affords enjoyment.
  • usage: "he puts duty before pleasure"
• Sexual gratification.
  • usage: "he took his pleasure of her"