The Collaborative International Dictionary
Sheriffdom
Sheriffalty \Sher"iff*al*ty\, Sheriffdom \Sher"iff*dom\, Sheriffry \Sher"iff*ry\, Sheriffship \Sher"iff*ship\, Sheriffwick \Sher"iff*wick\, n. The office or jurisdiction of sheriff. See Shrievalty.
Wiktionary
sheriffdom
n. 1 The regions in which a sheriff has authority. 2 The office, or period of office, of a sheriff.
Wikipedia
Sheriffdom
A sheriffdom is a judicial district in Scotland.
Since 1 January 1975, there have been six sheriffdoms.
Usage examples of "sheriffdom".
I counted over the number of his county sheriffdoms lately, and made the tale twenty-one.