(~s)
1.
If you make a ~ on a journey, you go by a route which is not the shortest way, because you want to avoid something such as a traffic jam, or because there is something you want to do on the way.
He did not take the direct route to his home, but made a ~ around the outskirts of the city.
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2.
A ~ is a special route for traffic to follow when the normal route is blocked, for example because it is being repaired. (AM; in BRIT, use diversion )
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