Matterhorn. The (French, Mont Cervin; Italian, Monte Silvio), an Alpine peak between Piedmont and the canton of Valais, 14,700 feet high. It was climbed for the first time in 1865 by Mr. Whymper, Lord F. Douglas, Rev. C. Hudson, and Mr. Hadow. The last three, with one of the guides, fell over a precipice and were killed.