a hilly county in southwestern England
"The family spent their summer holidays visiting the seaside towns of Cornwall, enjoying its rugged coastline and steep hills."
A maritime county of England; forming its south-western extremity, bordered by Devon in the east.
"Travelling along the rugged coastline, we explored the historic towns of Cornwall, the maritime county that forms England's south-western extremity and borders Devon to the east."
From Middle English Cornwaile, Cornwayle, a modification of Cornwale (after Old French Cornuaille), from Old English Cornwēalas ("Cornwall, inhabitants of Cornwall"), from Proto-Celtic *kornu ("horn") + Old English wealh ("stranger, foreigner"). Compare Wales/Welsh, Walloon, Gaul. Doublet of Cornouaille.