A corniche is a road on the side of a cliff or mountain, with the ground rising on one side of the road and falling away on the other. The word comes from the French route à or "road on a ledge".
The road that runs roughly between Saint-Jean-Cap-Ferrat (east of Nice) along the sea to Monaco has been colloquially called The Corniche. Another road to the north that parallels it is formally called the Moyenne Corniche.
The avenue that runs along the western and northern coast of the Beirut peninsula is colloquially called Corniche Beirut.
The promenade along the waterfront in Muttrah, Muscat is known as The Corniche.
The promenade that runs for several kilometers along the Doha Bay of Doha is colloquially called Doha Corniche.
Dammam corniche, Qatif corniche, Khobar corniche, Ras Tanura corniche, Jeddah Corniche, Yanbu corniche, Al Jubail corniche
The dictionary definition of at Wiktionary