Definition
A Latin term drawn from Roman civil law with two distinct legal meanings that must be distinguished by context.
1. (Civil law) To disturb, confound, or mix together. In Roman legal usage, turbare described the act of disturbing a legal right, proceeding, or peaceable possession, as well as the physical mixing or commingling of goods or substances — an act with significant consequences for questions of ownership and identity of property.
2. (Old English law) To cut or dig turf. In this sense, turbare appears in medieval English records as a term of art describing the exercise of a turbary right — the licensed or customary entitlement to cut peat or turf from another's land for fuel. The connection to the English word "turf" is direct and functional.
Common Confusion
The two meanings of turbare arise from entirely different legal traditions and should not be conflated. The civil law sense (to disturb or confound) has no connection to the Old English land law sense (to cut turf). The similarity in form reflects Latin's range rather than any conceptual link. Researchers encountering turbare in a Roman or continental civil law source are dealing with disturbance or commingling; those encountering it in a medieval English land record or grant are dealing with turbary — the right to cut peat. Context, including the surrounding Latin terminology and document type, is the only reliable guide.
Why It Matters in Research
This term presents a forking-path problem for corpus researchers. A single Latin word carries two meanings with no structural overlap, drawn from two distinct legal traditions. Misidentifying the applicable sense can send research in entirely the wrong direction.
For the civil law meaning: turbare appears in discussions of possession, interdict procedure, and property commingling. In Roman law, disturbing another's possession (turbare possessionem) could trigger interdicts — possessory remedies that did not require proof of title. Researchers working in civilian treatises, canon law materials, or early modern continental sources should watch for turbare in proximity to terms like possessio, interdictum, or dominium.
For the English turbary meaning: turbare in medieval English records signals a grant or dispute involving the right to cut turf — a common appurtenant right tied to specific parcels of land. These rights appear frequently in manorial surveys, charters, and common law pleadings about rights of common. Researchers should connect this usage to turbary (the substantive right) and to related common rights such as estovers, piscary, and common of pasture.
The term is largely absent from modern legal usage in either sense; it is a research term rather than a practice term, and its value lies in unlocking historical documents rather than contemporary materials.
Historical Dictionary Support
Burrill's Law Dictionary is the primary source available here and handles the term efficiently, if briefly. Burrill correctly identifies both the civil law sense (to disturb; to confound; to mix together) and the Old English sense (to cut or dig turf), crediting Calvinus's Lexicon Juridicum for the civil law usage and Spelman's Glossarium for the English land law sense. These attributions are appropriate: Calvinus was a standard civilian reference, and Spelman's Glossarium Archaiologicum is an authoritative source for medieval English legal terminology.
What Burrill does not develop — and what researchers should supply from other sources — is the procedural and doctrinal context for each meaning. The civil law sense is richer than "to disturb" suggests: it implicates the Roman law of possession and the interdict system. The turbary sense is richer than "to cut turf" suggests: it implicates the English law of profits à prendre and the entire taxonomy of rights in alieno solo. Neither of these doctrinal dimensions is accessible from the dictionary entry alone.
Jurisdictional Note
The civil law sense of turbare is relevant to Roman law, canon law, and civilian jurisdictions generally. The turf-cutting sense is specific to English common law and the medieval land records of England and Wales, where turbary rights were a recognized category of profit à prendre. Researchers working in Scottish, Irish, or other common law jurisdictions should verify whether turbary terminology follows the English pattern in their specific corpus.