Definition
A historical English land measurement defined as the amount of land that could be plowed in a single day. It is a unit of agrarian measure rooted in practical agricultural capacity rather than fixed geometric dimensions, making it inherently variable depending on soil conditions, terrain, and the animals and implements available.
Common Language
Modern common usage (Wiktionary): No entry. The term has passed entirely out of ordinary use.
Historical common usage (Webster's 1913): No entry. The term was already archaic by the nineteenth century.
The word shares a root with the French jour (day) and is closely related to the Latin diurnalis, meaning daily. Its English legal life was confined largely to medieval land records and glossarists; by the time English legal dictionaries were being systematically compiled, jornale was already a historical curiosity rather than a term of active practice.
Common Confusion
Jornale is easily conflated with two related terms that appear in the same historical sources. First, jour, the old English and law French word for a single day (appearing in Co. Litt. 134b and noted by Rapalje & Lawrence immediately following their jornale entry), is the temporal unit from which jornale derives. Jour measures time; jornale measures land by reference to that time. Second, the acre presents a parallel confusion: the acre was itself originally defined in similar performative terms — the amount of land a yoke of oxen could plow in a day — and the two units are sometimes treated as equivalents in secondary literature. They are not reliably equivalent. The acre eventually became a fixed statutory measure; jornale did not.
Why It Matters in Research
Researchers encountering jornale will almost exclusively find it in medieval English land records, conveyances, surveys, manorial rolls, and the glossarists who worked from those sources. Several navigational cautions apply.
Variable measure: Because jornale was defined by labor capacity rather than geometry, it has no single modern acreage equivalent. A document expressing a grant in jornales cannot be converted to modern units without reference to regional custom and the specific agricultural context of the record.
Spelling variants: Medieval and early modern records render this term inconsistently. Researchers should search for jornale, journale, jurnale, and diurnale, as well as vernacular forms. Corpus searches limited to a single spelling will miss significant runs of relevant material.
Connection to jour and dies: Rapalje & Lawrence treat jornale and jour as sequential entries, and both trace to the same conceptual root. Researchers working on time-computation issues in old English law — particularly around day-reckoning in procedural contexts — should be aware that the land-measurement sense and the temporal sense share vocabulary and may appear in proximity in primary sources. The Law Mind corpus likely contains both senses in overlapping source material.
Spelman as the controlling authority: Both Black's editions cite Spelman's Glossarium Archaiologicum as the source for this definition. Henry Spelman's Glossarium (published posthumously, with significant editions in 1664 and later) is the foundational reference for this and many related medieval land terms. Researchers who need to trace the intellectual genealogy of a definition in any of the historical dictionaries on the Law Mind shelf should look first to Spelman as the upstream authority for agrarian terminology of this kind.
Practical research use: Jornale is unlikely to appear as a contested legal concept in reported cases or statutes. Its research value is primarily documentary and contextual — helping a researcher understand what a medieval or early modern instrument was conveying when expressing the extent of a land grant.
Historical Dictionary Support
The three source dictionaries agree on the core definition without meaningful divergence. Black's first edition gives the bare minimum: "as much land as could be plowed in one day." The second edition adds the qualifier "In old English law" and cites Spelman, which is the more useful formulation for a researcher needing to locate the term in context. Rapalje & Lawrence are consistent with both Black's editions and add value by situating jornale immediately alongside jour, making explicit the etymological and conceptual relationship between the land measure and the day itself.
None of the source dictionaries provides acreage equivalents, regional variations, or guidance on spelling variants — gaps that matter considerably for anyone working with primary sources. The historical dictionaries treat this as a definition-only entry, which accurately reflects that jornale had no active doctrinal life by the time these works were compiled.
Encyclopedia Cross-Reference
See Law Mind Encyclopedia: Land Measurement in Historical English Law; Manorial Records and Agrarian Tenure.