Definition
Avi is an archaic Latin plural form appearing in early common law and Scots law sources, used as a variant or abbreviated reference to averia — a term denoting cattle, beasts of burden, or chattels of a working animal character. In legal Latin, avi functions as a contraction or scribal shorthand found in manuscript records and early printed digests, directing readers to the broader category of averia. The term has no independent legal force distinct from averia and is best understood as a paleographic artifact rather than a term of art with its own definition.
Common Language
Modern common usage (Wiktionary): A male given name derived from Hebrew.
The gap here is absolute. The common usage of "avi" as a given name shares no connection with its appearance in legal sources. Researchers encountering "avi" in a legal manuscript or index should not treat it as a personal name; it is almost certainly a Latin abbreviation or plural form pointing to averia or a related cattle-and-chattels concept.
Common Confusion
Avi is easily confused with averia (the full plural form) and averium (the singular). In Bracton and Fleta, averium is used in the singular and averia in the plural; scribal practice sometimes abbreviated both. Researchers should not treat avi as a separately defined legal category — it indexes into the same doctrinal territory as averia and averium and should be pursued through those headings.
Why It Matters in Research
This term functions almost exclusively as a finding aid clue rather than a substantive legal concept. If you encounter "avi" in a Law Mind source, the operative research move is to cross-reference AVERIA immediately.
In manuscript and early printed sources — particularly the Regiam Majestatem (Scots law), Bracton's De Legibus et Consuetudinibus Angliae, and Fleta — abbreviation and compression of Latin terms was routine. Burrill's entry does not define avi as a standalone term but uses it as an index pointer, citing Reg. Orig. 81b–83, Fleta lib. 2 cc. 44 and 48, and Bracton fol. 159b. These citations concern the pleading and recovery of chattels (catalla) under the name averia, including whether cattle and working beasts could be demanded through specific legal forms.
The practical research trap: a researcher scanning a glossary or index for "avi" expecting a definition will find only a cross-reference. The substantive content — what averia meant, how it was pleaded, what chattels qualified — lives under AVERIA and AVERIUM. Skene's citation to the Regiam Majestatem using averia in the singular is a further complication, meaning that even the singular/plural distinction does not cleanly map across jurisdictions.
Historical Dictionary Support
Burrill's Law Dictionary treats avi not as an independent entry with a definition but as a compressed reference node, citing foundational sources for the averia complex. The entry's substance is entirely carried by its citations: Bracton, Fleta, and the Reg. Orig. are the primary authorities. Burrill notes that the singular averium is used by Bracton and Fleta but "rarely by other writers," and flags Skene's variant usage in the Regiam Majestatem. No other standard historical law dictionaries (Cowell, Termes de la Ley, Jacob, Black) carry a distinct "avi" entry; the concept is absorbed into averia or averium in those sources. This absence confirms that avi is a scribal/indexing variant, not a term that developed independent doctrinal weight.
Jurisdictional Note
The averia complex, to which avi points, has Scots law dimensions not present in English common law. Skene's reference to the Regiam Majestatem using averia in the singular suggests that Scottish legal Latin did not observe the same singular/plural conventions as Bracton or Fleta. Researchers working in Scottish historical sources should not assume English usage applies.
Encyclopedia Cross-Reference
See AVERIA for the substantive legal treatment of cattle and working-beast chattels in early common law pleading.