sheriff

Definition from Nolo’s Plain-English Law Dictionary

The top law enforcement officer for a county, usually elected, who is responsible for police protection outside of incorporated cities, management of the county jail, and providing bailiffs for protection of the courts. The sheriff's uniformed police are called deputy sheriffs. A sheriff also handles civil activities like serving summons, subpenas, and writs, conducting judgment sales, and fulfilling various functions ordered by the courts.

Definition provided by Nolo’s Plain-English Law Dictionary.