to make (somebody) young or youthful again

Yet, though so plainly dressed, there was a certain rejuvenated appearance about her — Hardy

to restore (something) to an original or more vigorous state

to cause (a stream or river) to increase erosive activity, esp as a result of an increase in the height of the surrounding land

to cause (land) to develop features, esp greater relief, characteristic of an earlier stage in a cycle of erosion