The definition of by-and-by is at an unspecified, future time and place.
(noun)An example of by-and-by used in a sentence is, "We'll go on that vacation by-and-by," which means we'll go on that vacation at some point in the future.
See by-and-by in Webster's New World College Dictionary
noun
See by-and-by in American Heritage Dictionary 4
noun
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