Open University(noun)

a British university that is open to people without formal academic qualifications and where teaching is by correspondence or broadcasting or summer school

Open University(ProperNoun)

A UK university offering distance learning taught courses, that are open to people without formal academic qualifications, teaching being by correspondence and online with mostly optional tutorials and for some courses compulsory summer schools. Access to postgraduate research is selective and is primarily taught on campus using traditional methods.

Open University(ProperNoun)

A similar university in the Netherlands