To set on one side, to shelve.
1888. [The men] who get side-tracked are those who start in life in an occupation for which they have no natural aptitude.Sturdy Oak (Boston), May (Farmer).
1910. Mr. Hughes, it is said, longs for the comforts and ease of private life. We are inclined to think that a plan to return there permanently would evoke a storm of protests only a little less vociferous than would his side-tracking on the Supreme Court bench.N.Y. Evening Post, April 21.