The Devil's Dictionary

Here are two definitions for a well-known job. Can you guess what it is?

In America the chief executive office of a country, whose most characteristic duties, in some of the Western and Southern States, are the catching and hanging of rogues - Source: The Devil's Dictionary

An important official of a county or a shire charged primarily with judicial duties (and executing the processes and orders of courts and judges) - Source: Merriam-Webster Dictionary