Definition
In Roman and early English law, *purgare* is a Latin term meaning to clean, cleanse, or scour. In its primary recorded legal usage, it refers specifically to the physical maintenance of drainage infrastructure — ditches, trenches, and sewers — as a legal obligation enforceable under civil law. The term appears in contexts governing the duties of landowners or tenants to keep watercourses and drainage channels clear.
In a broader civil law tradition, *purgare* also carries the sense of purging or clearing a legal impediment — removing a defect, fault, or legal taint — though this usage is distinct from the narrow drainage context preserved in Burrill.
Common Confusion
The drainage sense of *purgare* (to scour a ditch) and the procedural sense (to purge a legal defect or contempt) share a root but operate in entirely different legal contexts. Researchers encountering *purgare* in early common law records relating to land tenure or watercourse disputes should not assume the procedural meaning, and vice versa. The procedural usage — most familiar in modern law through the phrase "purge a contempt" — descends from the same Latin root but through a different doctrinal lineage.
Why It Matters in Research
*Purgare* is a rare technical term that surfaces almost exclusively in Latin legal texts, civil law digests, and early English treatises drawing on Roman sources. Researchers working in medieval land law, manorial records, or early drainage and watercourse disputes may encounter the term in its physical-maintenance sense. The obligation to scour drainage channels was a recognized servitude and a source of local disputes, and the term could appear in Latin pleadings, custumals, or manorial court rolls without translation.
The broader purging sense — clearing a legal fault — connects to the doctrine of *purgatio*, which appears in canon law, early criminal procedure (particularly compurgation), and equity. These are related but distinct doctrinal streams. A researcher who encounters *purgare* without context should first identify whether the surrounding text concerns land maintenance or procedural/moral cleansing before reaching for a secondary source.
Because *purgare* appears in Fleta (an important late-thirteenth-century English legal treatise drawing heavily on Bracton and Roman law) as well as in the Digest, it occupies a position at the intersection of Roman civil law and early English practice — a crossover zone where terminology is often borrowed without full doctrinal transplantation.
Historical Dictionary Support
Burrill's Law Dictionary preserves the term in its narrowest, most concrete sense: the cleaning of a ditch, trench, or sewer. Burrill cites Digest 43.21.1 (the Roman title *De rivis*) and Fleta, lib. 4, c. 18, § 1. Both sources confirm this is a functional, property-related obligation rather than a metaphorical or procedural one in the contexts cited.
Burrill does not address the broader *purgatio* tradition — the purging of moral or legal fault — which is better treated in canon law dictionaries and treatises on early criminal procedure. This is a gap worth noting: the historical legal dictionaries on the Law Mind shelf tend to compartmentalize the physical and the procedural senses, leaving researchers to make the connection themselves. The two meanings are not unrelated (both involve removing something unwanted), but they operate under different rules and appear in different source types.
Jurisdictional Note
As a Latin civil law term, *purgare* in the drainage sense reflects Roman and early English practice and has no direct modern statutory equivalent. Modern obligations to maintain watercourses and drainage infrastructure exist in English and American law but are expressed in vernacular legal language. The term is primarily of historical and comparative research interest.