sheriffdom

Etymology

sheriff + -dom

noun

1. The regions in which a sheriff has authority.
   Crossing the river got him beyond his old nemesis' sheriffdom and into the territory of a more liberal authority.
   For the purposes of the administration of justice, Scotland is to be divided into areas, each to be known as a “sheriffdom”. 2014, Scottish Parliament, “Section 1(1)”, in Courts Reform (Scotland) Act 2014, page 1
2. The office, or period of office, of a sheriff.
   His sheriffdom began with his election and ended with his death.