Definition
A hood or covering for the shoulders, formerly worn by serjeants at law as part of their distinctive professional dress. The collobium was an item of ceremonial regalia identifying members of the order of serjeants at law, the elite class of English common law pleaders who held exclusive rights of audience in the Court of Common Pleas. The garment functioned as a visible marker of rank within the legal profession, distinguishing serjeants from other barristers and officers of court.
Common Language
Modern common usage (Wiktionary): Not in general modern use; when encountered, refers historically to a sleeveless liturgical vestment or tunic, particularly in ecclesiastical and heraldic contexts.
Historical common usage (Webster's 1913): A sleeveless garment; in ecclesiastical use, a kind of surplice or alb worn by clergy.
The gap matters here: in common and ecclesiastical usage, the collobium is a full garment worn over the body — most famously the collobium sindonis worn by English monarchs at coronation. In legal usage, the term was applied specifically to a hood or shoulder covering worn by serjeants at law, a narrower and distinct garment. A researcher encountering the term in legal sources should not import the ecclesiastical or coronation-robe meaning.
Why It Matters in Research
This is an archaic term of art with virtually no living legal application. Its research value is historical and contextual rather than doctrinal. Researchers working in English legal history — particularly on the Court of Common Pleas, the Inns of Court, or the order of serjeants at law — may encounter collobium in primary sources describing investiture ceremonies, court dress, or the formal constitution of the serjeant's rank.
The term appears in sources describing the coif and collobium together as the paired insignia of the serjeant at law. The coif (a white silk cap) is the more frequently discussed symbol of the order; the collobium appears as its complement. Researchers should be alert to this pairing in historical records.
Because serjeants at law were abolished in England as a functioning order during the nineteenth century (the last serjeants were appointed in 1868 and the order fell into disuse thereafter), the collobium has no living procedural significance in any common law jurisdiction. It appears only in historical, antiquarian, and ceremonial legal literature.
Researchers using the Law Mind corpus should note that the term surfaces most naturally in connection with English legal history rather than American sources. American legal dictionaries carry the definition by inheritance from English sources, not because American courts or practitioners ever used the garment or the term in practice.
Historical Dictionary Support
All four source dictionaries — Black's (1st and 2nd editions), Bouvier's, and Burrill's — are in precise agreement: the collobium was a hood or covering for the shoulders worn by serjeants at law. This is a rare instance of complete definitional unanimity across the shelf, which itself signals that the term was not contested or evolving in legal usage — it was simply a fact of historical dress.
Burrill's entry, though truncated in the available source, supplies the Latin gloss "cucullus, sive super-" — a fragment indicating that Burrill was rendering the term as cucullus (hood) or a related shoulder covering, reinforcing the garment's character as a hood-type piece rather than a full robe. This Latin framing is useful for researchers working with medieval and early modern Latin legal records where the term may appear in Latinized form.
What the historical dictionaries do not supply: none of the four sources describe the collobium's precise appearance, its relationship to the coif in investiture ceremony, or when the wearing of the garment was discontinued. Researchers needing that level of detail must turn to legal historical scholarship on the serjeants at law, particularly J.H. Baker's work on the English legal profession.
Jurisdictional Note
Exclusively an English legal term. No American, Canadian, or other common law jurisdiction adopted the order of serjeants at law or its associated regalia. The term appears in American legal dictionaries as a matter of completeness in covering English legal history, not because it ever had operative significance in American courts.