What is the meaning of involve?

verb

• Connect closely and often incriminatingly.
  • usage: "This new ruling affects your business"
  • synonyms: affect, regard
• Engage as a participant.
  • usage: "Don't involve me in your family affairs"
• Have as a necessary feature.
  • usage: "This decision involves many changes"
  • synonyms: imply
• Require as useful, just, or proper.
  • usage: "It takes nerve to do what she did"; "success usually requires hard work"; "This job asks a lot of patience and skill"; "This position demands a lot of personal sacrifice"; "This dinner calls for a spectacular dessert"; "This intervention does not postulate a patient's consent"
  • synonyms: necessitate, ask, postulate, need, require, take, call for, demand
• Contain as a part.
  • usage: "Dinner at Joe's always involves at least six courses"
• Occupy or engage the interest of.
  • usage: "His story completely involved me during the entire afternoon"
• Make complex or intricate or complicated.
  • usage: "The situation was rather involved"