What is the meaning of contrivance?

noun

• A device or control that is very useful for a particular job.
  • synonyms: appliance, contraption, convenience, gadget, gizmo, gismo, widget
• The faculty of contriving; inventive skill.
  • usage: "his skillful contrivance of answers to every problem"
• An elaborate or deceitful scheme contrived to deceive or evade.
  • usage: "his testimony was just a contrivance to throw us off the track"
  • synonyms: stratagem, dodge
• An artificial or unnatural or obviously contrived arrangement of details or parts etc..
  • usage: "the plot contained too many improbable contrivances to be believable"
• Any improvised arrangement for temporary use.
  • synonyms: lash-up
• The act of devising something.
  • synonyms: devisal