\Side"track`\, v. t. [imp. & p. p. {Sidetracked}; p.
pr. & vb. n. {Sidetracking}.]
1. (Railroads) To transfer to a siding from a main line of
   track.
2. Hence, fig., to divert or reduce to a position or
   condition that is relatively secondary or subordinate in
   activity, importance, effectiveness, or the like; to
   switch off; to turn aside, as from a purpose. [Colloq.]
         Such a project was, in fact, sidetracked in favor of
         the census of school children.        --Pop. Sci.
                                               Monthly.