Meaning

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

verb develop youthful topographical features

verb make younger or more youthful

originFrom re- (“again”) + Latin iuvenis (“young”) + -ate (verb-forming suffix). Compare Old French rejuvener. Displaced native Middle English gingen, from Old English *ġinġan (literally “to make young”), equivalent to Old English ġeong + Old English -an.

Etymology from Wiktionary, CC BY-SA 3.0