road trip Syllabification: (road trip)Definition of road trip noun 1a journey made by car, bus, etc.. 2in sports, a series of games played away from home. verb (road-trip) [no object] make a journey by car, bus, etc.:they road-tripped from New Jersey to HollywoodDerivatives road-tripper noun road trip in other Oxford dictionaries Definition of road trip in the British & World English dictionary