sidehill

Etymology

From side + hill.

sidehill means the side or slope of a hill; a sloping descent. Lexicurio rates it Sui generis — a strength score of 87 out of 100.

noun

The side or slope of a hill; a sloping descent.“By reason of this planning the line, which for much of its length has a sidehill location in river canyons with steep sides, was compelled to tunnel extensively, the 43 tunnels on the route having a combined length of 44,189 ft.”