the universities of Oxford and Cambridge, considered as a unit separate from other universities in Britain

Many members of the British government went to Oxbridge (= a college at either Oxford or Cambridge). 英国政府中的许多官员都曾就读于牛津或剑桥大学。

belonging or relating to the universities of Oxford and Cambridge

She's an Oxbridge student. 她是牛津或剑桥大学的学生。

He's very Oxbridge in his manner (= behaves as if he went to a college in Oxford or Cambridge). 他举手投足间很有牛津剑桥的风范。