Meaux (mō) [key], city (1990 pop. 49,409), Seine-et-Marne dept., N France, in Brie, on the Marne River. It is an industrial center where metals, flour, chemicals, and foodstuffs are produced. An episcopal see since the 4th cent., Meaux has a cathedral (13th–14th cent.) that contains the tomb of Bossuet, the city's most famous bishop. In the massacre of Meaux (1358), thousands of peasants who had participated in the Jacquerie were slain. The World War I Battles of the Marne (1914, 1918) took place near Meaux. The American Monument, a large sculpture (1932) by Frederick MacMonnies located in the city, commemorates the first battle; the Museum of the Great War (2011) also is in Meaux.