What is the meaning of Chancellor?

A senior secretary or official with administrative or legal duties, sometimes in charge of some area of government such as finance or justice.

Ellipsis of Chancellor of the Exchequer.

The head of the government in some German-speaking countries.

A senior record keeper of a cathedral; a senior legal officer for a bishop or diocese in charge of hearing cases involving ecclesiastical law.

The head of a university, sometimes purely ceremonial.

The foreman of a jury.

The chief judge of a court of chancery (that is, one exercising equity jurisdiction).

Source: wiktionary.org