Meuse River n 1: a European river; flows into the North Sea [syn: {Meuse}, {Meuse River}] 2: an American operation in World War I (1918); American troops under Pershing drove back the German armies which were saved only by the armistice on November 11 [syn: {Meuse}, {Meuse River}, {Argonne}, {Argonne Forest}, {Meuse-Argonne}, {Meuse- Argonne operation}]