Definition of fountain of youth
- Exercise is good for you, but it's not a perfect fountain of youth.
: the source from which something proceeds or is supplied
: a spring of water issuing from the earth
: an artificially produced jet of water
: to flow or spout like a fountain
: to cause to flow like a fountain
: the time of life when one is young
: the early period of existence, growth, or development
: a young person
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