Definition of "Rejuvenate" :

verb: become young again

"The old man rejuvenated when he became a grandfather."

verb: return to life; get or give new life or energy

verb: make younger or more youthful

"The contact with his grandchildren rejuvenated him."

verb: develop youthful topographical features

"The land rejuvenated."

verb: cause (a stream or river) to erode, as by an uplift of the land