What is the meaning of rejuvenate?

verb

• Cause (a stream or river) to erode, as by an uplift of the land.
• Develop youthful topographical features.
  • usage: "the land rejuvenated"
• Make younger or more youthful.
  • usage: "The contact with his grandchildren rejuvenated him"
• Return to life; get or give new life or energy.
  • usage: "The week at the spa restored me"
  • synonyms: regenerate, restore
• Become young again.
  • usage: "The old man rejuvenated when he became a grandfather"