Definition
In old English law, *pirus* (Latin) denotes a pear tree. The term appears in medieval English legal records in the context of property descriptions, boundary markings, and land conveyances, where fruit trees — including pear trees — served as identifiable landmarks in the definition of estate boundaries or appurtenant rights.
Why It Matters in Research
Researchers encountering *pirus* in medieval English legal texts, particularly in property records, writs, or conveyances, should recognize it as a descriptor of a specific fruit tree species rather than a generic reference to vegetation. In the era of metes-and-bounds land description, named trees of identifiable species were regularly employed as physical boundary markers, and their precise identification could bear on the scope of a grant or the resolution of a boundary dispute. The term appears in Fleta (lib. 2, c. 82, § 2), a late thirteenth-century English legal treatise, and is most likely to surface in Latin-language records from that period. Researchers working with English land records predating the systematic use of surveyed boundaries should be alert to *pirus* and cognate terms (*malus* for apple, *quercus* for oak, etc.) as functional legal reference points embedded in property descriptions rather than mere incidental detail.
Historical Dictionary Support
Burrill's Law Dictionary gives a terse but accurate entry: "Lat. In old English law. A pear tree," with a single reference to Fleta. This is consistent with the narrow and technical function the term served. No broader doctrinal weight attaches to the word itself — its legal significance is entirely contextual, deriving from its role in a specific document or description rather than from any independent legal concept. Historical dictionaries beyond Burrill do not appear to treat the term independently, which reflects its status as descriptive Latin vocabulary rather than a term of art. Researchers should not expect doctrinal elaboration from any shelf source.