Definition
An archaic legal term appearing in Domesday Book (1086) denoting a thicket of wood situated in a valley. The term is a descriptor of land character used in medieval English land surveys and records, classifying a particular type of wooded terrain for purposes of estate description and valuation.
Common Language
Modern common usage (Wiktionary): A diminutive of the given names Andrew or Drusilla; also used as a standalone given name or surname.
Historical common usage (Webster's 1913): Not recorded as a common English word.
The gap here is complete. The legal term dru has no connection to the personal name. Researchers encountering dru in a medieval land record should not read it as a personal name or place name fragment — it is a terrain descriptor, functionally analogous to terms like grove, coppice, or wood as used in the same period.
Common Confusion
Dru should not be confused with droit (right or law), which appears immediately after it in some dictionary listings due to alphabetical proximity. The truncated Black's entry — "Droit ne" — is the beginning of a separate entry (droit ne doit pas souffrir) that was editorially run together with dru in some print editions, creating potential misreading. These are entirely unrelated terms.
Why It Matters in Research
Dru is a term of Domesday Book provenance and will surface almost exclusively in research touching on Norman land law, Domesday scholarship, or medieval English estate records. Its practical significance is narrow but precise: it identifies a landscape feature that affected how land was classified, assessed, and valued in the survey.
Researchers working with Domesday transcriptions, translations, or commentaries should be aware that the term belongs to a cluster of Old French and Anglo-Latin terrain vocabulary — alongside terms like silva (woodland), pastura (pasture), and pratum (meadow) — used systematically to describe the productive character of manorial land. Misidentifying dru as a place name, personal name, or scribal abbreviation is a realistic error when reading abbreviated or damaged manuscript sources.
The term does not appear to have survived into later English common law vocabulary in any operative sense. It is not a term of art in pleading, conveyancing, or statutory construction. Its relevance is therefore historical and descriptive rather than doctrinal.
Historical Dictionary Support
Black's Law Dictionary records dru minimally: "A thicket of wood in a valley. Domesday." No further elaboration is offered, and no cross-references are given.
Burrill's Law Dictionary reproduces the same core definition but is more useful for the researcher because it situates dru within a group of related archaic entries. Burrill follows dru immediately with druchte (betrothed, from the Salic Law) and drudes (a species of vassal in old feudal law, from Spelman's Glossarium). This clustering is editorially significant: it confirms that dru belongs to a stratum of early medieval legal vocabulary — predominantly Anglo-Norman and Frankish in origin — that was preserved in English legal dictionaries largely through Spelman's Glossarium Archaiologicum and Domesday commentary traditions rather than through living legal usage.
Neither dictionary traces the linguistic origin of the term, and neither connects it to later conveyancing vocabulary. Historical sources are in agreement on the definition; the entry is simply thin across both works, reflecting how rarely the term arose even in antiquarian legal scholarship.
Jurisdictional Note
Dru is specific to English legal history and appears in the context of Domesday Book, a uniquely English administrative document. It has no recorded usage in Scottish, Irish, or continental legal traditions in this sense, though cognate terrain vocabulary appears across medieval Norman records.