What is the meaning of descend?

verb

• Move downward and lower, but not necessarily all the way.
  • usage: "The temperature is going down"; "The barometer is falling"; "The curtain fell on the diva"; "Her hand went up and then fell again"
  • synonyms: fall, go down, come down
• Come from; be connected by a relationship of blood, for example.
  • usage: "She was descended from an old Italian noble family"; "he comes from humble origins"
  • synonyms: derive, come
• Do something that one considers to be below one's dignity.
  • synonyms: condescend, deign
• Come as if by falling.
  • usage: "Night fell"; "Silence fell"
  • synonyms: fall, settle