Definition
Half tongue (also written half-tongue) is a historical legal term for a special jury composed equally of native-born subjects and foreign nationals (aliens or denizens). When a party to a legal proceeding was a foreigner, the law provided that half the jurors empaneled to hear the case would be drawn from the alien's own community or from the broader class of resident aliens, so that the foreign party would be judged in part by peers who shared their status and, often, their language. The doctrine was rooted in the medieval concern that a foreigner could not receive a fair trial before a jury composed entirely of English subjects who might not understand foreign customs, speech, or commercial practice.
The Latin form is medietas linguæ, literally "half of tongue" or "half of language," and the procedure is also recorded as de medietate linguæ. Burrill cross-references these Latin entries directly, and researchers will find the fuller doctrinal treatment under those headings in historical dictionaries and common law authorities.
Common Language
Modern common usage (Wiktionary): No standard entry. The phrase does not appear in ordinary modern English.
Historical common usage (Webster's 1913): Not recorded as a common English phrase. The component words — "half" and "tongue" — carry their ordinary meanings; "tongue" in period usage frequently meant language or speech as well as the physical organ.
The legal compound "half tongue" belongs entirely to the technical vocabulary of jury procedure. A modern reader encountering it in a historical document would not infer its meaning from the component words alone. The "tongue" here refers to language and nationality, not speech in any general sense.
Recognized Forms
/SUBTYPES
The procedure appeared under several overlapping labels in the sources:
— Half tongue (English vernacular form)
— Medietas linguæ (Latin form used in writs and pleading)
— De medietate linguæ (the form of the writ or motion invoking the right)
— Jury de medietate linguæ (full descriptive title in legal treatises)
These are variant names for the same institution, not distinct subtypes. Researchers should search all forms when working through historical indexes and digests.
Why It Matters in Research
Researchers working in English legal history from the medieval period through the nineteenth century will encounter half tongue most often in three contexts: merchant law disputes (where alien merchants were frequent litigants), criminal proceedings involving foreign defendants, and statutory materials as Parliament repeatedly modified, limited, and ultimately abolished the right.
The right to a jury de medietate linguæ was a recognized common law entitlement in England for several centuries, and it was carried into some early American jurisdictions. Its abolition in England came in stages during the nineteenth century. Because the term appears under different Latin and English headings across different periods and sources, researchers can easily miss relevant material if they search only one form. Burrill sends the reader to the Latin entries for doctrinal content, which is typical of how nineteenth-century dictionaries treated anglicized Latin terms — the English entry is a pointer, not a full treatment.
In American sources, the right received uneven reception. Some states recognized it by statute or common law reception; others did not. The constitutional dimensions of the right — what, if anything, the Sixth Amendment's jury guarantee required — were never definitively settled before the institution faded from use. This makes the half-tongue jury a productive research thread for scholars working on the history of the jury trial right, the treatment of aliens in American courts, or the reception of English common law in individual states.
Do not assume that the absence of the English phrase "half tongue" in an American source means the institution was unknown there. Search for "medietas linguæ," "de medietate linguæ," and "mixed jury" (used in some sources as a rough functional equivalent) to capture the full picture.
Historical Dictionary Support
Burrill's Law Dictionary treats half tongue as a pure cross-reference entry, supplying the Latin equivalent and the core functional description — a jury half of denizens or natives, half of aliens — before directing the reader to the Latin headings for authority. This is the standard treatment for anglicized Latin legal terms in nineteenth-century dictionaries: the vernacular entry establishes the concept and the Latin entry carries the citations.
Burrill's entry does not discuss the historical origins of the right, its statutory development, or its American reception. Researchers needing doctrinal depth should proceed to Coke's Institutes and the secondary literature on alien status in English law. The Coke citation appearing in the same dictionary column (Co. Litt. 135b) is associated with a half-year calculation matter that appears in the printed text immediately following the half-tongue entry — it is not an authority for half tongue itself, and researchers should not treat it as one. This is an artifact of how the printed dictionary column is organized.
Jurisdictional Note
The right to a half-tongue jury was an established feature of English common law but received inconsistent treatment in American jurisdictions after independence. Some states adopted it by statute or through common law reception; federal courts did not develop a uniform rule. By the late nineteenth century the institution had largely disappeared from active practice on both sides of the Atlantic, making it primarily a historical research issue rather than a live procedural question.