transmountain
adjective
trans·moun·tain ˌtran(t)s-ˈmau̇n-tᵊn 
ˌtranz-
: crossing or extending over or through a mountain
a transmountain road
a transmountain tunnel
Word History
First Known Use
1929, in the meaning defined above
- the man of the house
- the man on the Clapham omnibus
- the man upstairs
- the many
- the Marine Corps
- the Marines
- the maritimes
- the mass of
- the masses
- the matter
- the mccoy
- the mearns
- the Messiah
- the metric system
- the Mexican wave
- the Midas touch
- the Middle Ages
- the Middle East
- the Middle West
- the middle-aged
- the Mideast
- the midnight hour
- the Midwest
- the military
- the milk of human kindness