From Longman Dictionary of Contemporary Englishtrade routeˈtrade route noun [countable] BBTSGa way across land or sea used by traders in the past ancient trade routes between Europe and Asia
Examples from the Corpus
trade route• The king's highway, an important trade route, ran down the eastern plateau.• We will see how the mummies occupied the midpoint of the most important overland trade route in Eurasian history. 