"Quay", on the other hand, has its origin in the Proto-Celtic language. Before it changed to its current form under influence of the modern French "quai", its Middle English spelling was "key", "keye" or "caye". This in turn also came from the Old Norman "cai" (Old French "chai"), both roughly meaning "sand bank". The Old French term came from Gaulish "caium", ultimately tracing back to the Proto-Celtic "*kagio-" "to encompass, enclose". Modern cognates include Welsh "cae" "fence, hedge" and Cornish "ke" "hedge", and the Dutch "kade".