an arch, located in Paris, begun in 1806 by Napoleon in honor of his victorious armies and completed in 1836. The unknown soldier of France and the eternal flame were placed beneath the arch after World War I.
Also, Arc de Tri·omphe de l'É·toile /ark də triˈɔ̃f də leɪˈtwal/Show Spelled[ark duh tree-awnf duh ley-twal]Show IPA.