The term 'Road to Rouen' is a reference to the novel of the same name by French author Guy de Maupassant. The novel follows the story of a young man, Pierre, who embarks on a journey to Rouen, France in search of his fortune. The crossword solution for this term is 'RUE', which is the French word for street or road. Therefore, the term 'Road to Rouen' can be interpreted as Pierre's journey down a street or road to the city of Rouen.