de·tour (dētr′, dĭ-tr)
1. A roundabout way or course, especially a road used temporarily instead of a main route.
2. A deviation from a direct course of action.
intr. & tr.v. de·toured, de·tour·ing, de·tours
To go or cause to go by a roundabout way.
[French détour, from Old French destor, from destorner, to turn away : des-, de- + torner, to turn; see TURN.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The American Heritage Dictionary Blog
Check out our blog, updated regularly, for new words and revised definitions, interesting images from the 5th edition, discussions of usage, and more.