What is the meaning of devolve?

verb

• Pass on or delegate to another.
  • usage: "The representative devolved his duties to his aides while he was in the hospital"
• Be inherited by.
  • usage: "The estate fell to my sister"; "The land returned to the family"; "The estate devolved to an heir that everybody had assumed to be dead"
  • synonyms: fall, return, pass
• Grow worse.
  • usage: "Her condition deteriorated"; "Conditions in the slums degenerated"; "The discussion devolved into a shouting match"
  • synonyms: deteriorate, drop, degenerate