Vill is a term used in English history to describe a land unit which might otherwise be described as a parish

Parish

A parish is a territorial unit historically under the pastoral care and clerical jurisdiction of one parish priest, who might be assisted in his pastoral duties by a curate or curates - also priests but not the parish priest - from a more or less central parish church with its associated organization...

, manor

Manorialism

Manorialism, an essential element of feudal society, was the organizing principle of rural economy that originated in the villa system of the Late Roman Empire, was widely practiced in medieval western and parts of central Europe, and was slowly replaced by the advent of a money-based market...

 or tithing.

The term is used in the period immediately after the Norman conquest and into the late medieval. Land units in Domesday are frequently referred to as vills, although the term is not used in Domesday itself. The vill is a geographical subdivision of the hundred and county.

Traditionally, amongst legal historians, a vill referred to the tract of land of a rural community, whereas 'township

Township (England)

In England, a township is a local division or district of a large parish containing a village or small town usually having its own church...

' was referred to when the tax and legal administration of a rural community was meant.

An unfree inhabitant of a vill was called a villein.