Other forms: prefects
A prefect is a chief officer or magistrate, originally in ancient Rome.
Like a mayor or governor, a prefect is someone powerful: a chief officer or chief magistrate. In ancient Rome, a prefect was not only in charge of a city or province but of the military too, just as the United States President is the military commander-in-chief too. The term prefect is a little old-fashioned, but there are still prefects around today.