Simplon: Meaning and Definition of
Pronunciation: (sim'plon Fr. san&sylpplôn'), [key]
- a mountain pass in S Switzerland, in the Lepontine Alps: crossed by a carriage road constructed 1800–06 on Napoleon's orders. 6592 ft. (2010 m) high.
- a tunnel between Switzerland and Italy, NE of the Simplon Pass: longest tunnel in the world. 12 mi. (20 km) long.