Roubaisian UK /ɹoʊˈbeɪzɪən/US /ɹoʊˈbeɪʒən/adjective 1noun 1forms 3 adjective1 •Of, relating, or pertaining to Roubaix, France noun1 •A person who was born in, or is a citizen or inhabitant of Roubaix, FranceEven very large immigrant communities managed to integrate into the ranks of the Roubaignos (native Roubaisians) through their membership in the working class. — 1994 formsRoubaisians · more Roubaisian · most Roubaisian