A town in Buckinghamshire, south central England; population 235,280 (est. 2009). It was established as a new town in the late 1960s, and is the site of the headquarters of the Open University.
Definition of Milton Keynes in US English:
Milton Keynes
proper nounˌmiltn ˈkēnz
A town in south central England; population 235,280 (est. 2009).