In academic contexts. Originally: a member of the body of scholars who, together with their head, constitute a college (as of Oxford, Cambridge, or…

At Cambridge, and occasionally Oxford, University: a college officer who accompanies students at an examination, or who presents them at a degree…

Usually with capital initial. At Christ Church, Oxford: (the name for) a member of the college foundation, corresponding to the terms ‘fellow’ and…

A fellow of a college (in the University of Cambridge) not on the foundation, and having inferior privileges to a foundation fellow.

formerly, a fellow of a college who had no formal duties.