Definition
A consecrated religious object of Roman Catholic devotion: specifically, a small flat cake or disc of white wax stamped with the figure of a lamb bearing a cross, blessed by the Pope. In its legal context, the term appears primarily in historical English ecclesiastical and criminal law, where the manufacture, importation, or distribution of Agnus Dei objects was regulated — and at certain periods prohibited — by statute. The concern was twofold: the objects were viewed by Protestant authorities as instruments of Catholic devotion incompatible with the Established Church, and their alleged miraculous properties were treated as superstitious imposture. Under Elizabethan statutes, bringing Agnus Dei objects into England, or delivering them to any subject, was made a criminal offense, reflecting the broader suppression of Catholic practice in the post-Reformation period.
Common Language
Modern common usage (Wiktionary): A liturgical chant recited as part of the Mass beginning with the words "Agnus Dei"; a small model, picture, or heraldic representation of a lamb with a cross; or a bar of wax imprinted with such a figure and blessed by the Pope.
Historical common usage (Webster's 1913): A figure of a lamb bearing a cross or flag; a cake of wax made from the remains of the paschal candles and blessed by the Pope; and a triple prayer in the sacrifice of the Mass beginning with the words "Agnus Dei."
The common usage encompasses three distinct referents — the liturgical chant, the heraldic image, and the wax object — while the legal usage is narrower, fixing specifically on the wax disc as a physical article subject to statutory prohibition and ecclesiastical regulation. A researcher encountering the term in a legal source should not assume the musical or purely heraldic sense is intended.
Why It Matters in Research
This term is an edge case in legal research: it has a genuine legal history but is unlikely to appear in modern legal sources in any operative sense. Researchers will encounter it almost exclusively in:
1. Historical ecclesiastical law materials, particularly sources touching on post-Reformation English religious conformity statutes (roughly 1559–1700);
2. Canon law texts dealing with the blessing and distribution of sacramentals;
3. Historical criminal law digests where the Elizabethan penal statutes against Catholic practices are catalogued.
The primary trap is treating the term as a generalized religious symbol when the legal sources treat it as a specific physical object with a specific regulatory history. Black's both editions follow Cowell's Interpreter (a 17th-century English legal dictionary), and that lineage tells you something: the definition entered the common law dictionary tradition through the lens of English anti-Catholic legislation, not Catholic canon law or liturgical practice.
A secondary trap is scope: the Wiktionary and Webster's definitions are broader, encompassing the chant and the heraldic image. Legal sources, following Cowell, narrow to the wax object. If you are researching heraldic uses of the Agnus Dei symbol — which does appear in coat-of-arms contexts — the legal dictionary definition will not serve you well, and you should look to heraldry references instead.
For corpus researchers working in Law Mind, expect this term to surface as a definitional reference point in entries on ecclesiastical law, sacramentals, or English recusancy law rather than as a standalone substantive doctrine.
Historical Dictionary Support
Both Black's editions are effectively identical, reproducing the same definition word for word with only punctuation variation. Both cite Cowell as the authority, and Cowell's Interpreter (1607) is the proximate source for this definition entering the common law lexicon. This agreement across editions signals that neither edition conducted independent legal analysis — the entry was carried forward as a reference artifact rather than updated through legal development.
Webster's 1913 is notably fuller than Black's on the common meaning, capturing all three senses (chant, image, wax object) and noting that the wax is made from paschal candle remains. Black's, by contrast, omits any liturgical or musical dimension entirely, which is consistent with its function as a legal rather than theological reference.
What the historical dictionaries collectively miss: neither Black's edition places the term in its statutory context — the Elizabethan penal legislation that gave the term its legal salience in English law. The entries define the object but do not explain why a legal dictionary entry was warranted. Researchers seeking the operative legal significance must go beyond Black's to primary statutory sources and to commentators on English recusancy law.
Encyclopedia Cross-Reference
See Law Mind Encyclopedia: Ecclesiastical Law; Recusancy and Religious Conformity Statutes.