noun A coastal road, especially one cut into the side of a cliff.
From French route en corniche, from Italian cornice (frame, ledge), perhaps from Latin cornix (crow), from its resemblance to the beak of a crow. Earliest documented use: 1837.
“The median strip on the corniche has a magical open-air museum.”
Maureen Dowd; A Girls’ Guide to Saudi Arabia; Vanity Fair (New York); Aug 2010.