v. side·tracked, side·track·ing, side·tracks
1. To divert from a main issue or course: I was sidetracked from my work by an unexpected visitor.
2. To delay or block the progress of deliberately: "a bill that would sidetrack food irradiation in this country" (Alexis Beck).
3. To switch from a main railroad track to a siding.
1. To deviate from a main issue or course.
2. To run into a siding.
A railroad siding.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.