detour (n.)youdaoicibaDictYouDict[detour 词源字典]
1738, from French détour, from Old French destor "side road, byway; evasion, excuse," from destorner "turn aside," from des- "aside" + tourner "to turn" (see turn (v.)).[detour etymology, detour origin, 英语词源]
detour (v.)youdaoicibaDictYouDict
1836 (intransitive); 1905 (transitive), from detour (n.). Related: Detoured; detouring.