If you make a detour on a trip, 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.
双语例句
例： He did not take the direct route to his home, but made a detour around the outskirts of the city.
他没有直接回家，而是在市郊绕了一段路。