Pagus

thumb|300px|Approximate in Burgundy (region)|Burgundy, 9th century

In ancient Rome, the Latin word ' (plural ') was an administrative term designating a rural subdivision of a tribal territory, which included individual farms, villages (), and strongholds () serving as refuges, as well as an early medieval geographical term. From the reign of Diocletian (284–305 AD) onwards, the referred to the smallest administrative unit of a province. These geographical units were used to describe territories in the Merovingian and Carolingian periods, without any political or administrative meaning.