Definition
A game of hazard or chance. In old English law, joocus referred to gambling games — contests in which the outcome was determined by chance rather than skill — and appeared in early legal contexts concerned with regulating or adjudicating disputes arising from such games.
Why It Matters in Research
Joocus is an obsolete Latin term appearing in early English legal records and registers, not in modern legal usage. Researchers encountering it will do so almost exclusively in medieval or early modern sources, particularly the Registrum Omnium Brevium (Register of Writs), where it appears in connection with writs addressing gaming disputes or unlawful gaming activity. The term is essentially a Latin transliteration preserved in formal register entries and is not a term of art that carried forward into common law development in any significant doctrinal way. Researchers should treat it as a period marker: its presence signals a document of considerable antiquity and should prompt verification of the broader legal context surrounding gaming regulation in that era. Do not conflate it with modern gaming or gambling law doctrines, which developed through entirely separate statutory and regulatory channels.
Historical Dictionary Support
Black's Law Dictionary (2nd Ed.) provides the only substantive historical dictionary entry, defining joocus simply as "a game of hazard" with a single citation to Reg. Orig. 290 — a reference to the Registrum Omnium Brevium, one of the foundational compilations of English writ forms. The entry is minimal, as befits a term whose legal significance was narrow and historically bounded. No other major historical legal dictionaries appear to have carried the term, which itself reflects its limited doctrinal footprint. The absence of the term from later editions of Black's and from competing historical dictionaries such as Bouvier's confirms that joocus did not survive as a working legal term beyond the period of Latin-language legal pleading and register practice. Historical sources are silent on any developed body of case law or doctrine built around the term itself.