'Detour' definitions:

Definition of 'detour'

From: WordNet
noun
A roundabout road (especially one that is used temporarily while a main route is blocked) [syn: detour, roundabout way]
verb
Travel via a detour

Definition of 'Detour'

From: GCIDE
  • Detour \De`tour"\, n. [F. d['e]tour, fr. d['e]tourner to turn aside; pref. d['e]- (L. dis-) + tourner to turn. See Turn.] A turning; a circuitous route; a deviation from a direct course; as, the detours of the Mississippi. [1913 Webster]