The head or presiding officer of a society, institution, etc., e.g. of certain colleges (in Oxford, Cambridge, Yale, and elsewhere), guilds…

The head of certain universities, colleges, or schools.

The specific title of the heads of certain universities or colleges; (North American) a senior administrative officer in certain universities.

An appointed or elected head of any gathering, who presides over meetings and proceedings. A title applied to the heads of certain colleges of…

spec. The person having authority over or charge of a college or school; a headmaster or headmistress, a principal.

The principal of a college at the University of Oxford or Cambridge. Cf. house, n.1 7b.

A deputy or assistant rector (in various senses of the noun).

slang. The head of an Oxford College or Hall. Obsolete. Cf. golgotha, n. 2.

(A title for) the president of a college. Hence: any president, as of America, a society, a corporation, etc.

(A title for) the president of a college. Hence: any president, as of America, a society, a corporation, etc.