Definition
In heraldry and the law of armorial bearings, gules is the tincture designating the color red. It is one of the five principal heraldic tinctures (the others being azure, sable, vert, and purpure) and appears on coats of arms, seals, and other armorial devices. In engraved or printed representations of arms, where actual color cannot be shown, gules is conventionally indicated by closely spaced parallel vertical lines running the full height of the field or charge. In the alternative blazoning systems used by some heralds, gules corresponds to the planet Mars and the gemstone ruby.
Common Language
Modern common usage (Wiktionary): Red, as on a coat of arms; typically represented in engraving by vertical parallel lines.
Historical common usage (Webster's 1913): The tincture red in heraldry, indicated on seals and engraved escutcheons by parallel vertical lines; used poetically for red or anything red.
The gap between common and legal usage here is narrow but specific. In ordinary and literary language, gules functions simply as a poetic or archaic synonym for red. In legal and heraldic contexts — particularly in the formal description (blazon) of coats of arms, corporate seals, and official insignia — gules is a term of art with precise technical consequences. The choice of tincture is part of the legally operative description of armorial bearings, and substituting a generic color word for the proper heraldic tincture would render a blazon defective or ambiguous.
Why It Matters in Research
Gules surfaces in legal research primarily in three contexts: (1) disputes over armorial bearings and grants of arms, particularly in English and Scottish law where the College of Arms and the Court of the Lord Lyon have jurisdiction; (2) the interpretation of corporate charters, patents of nobility, and royal grants that include blazons of armorial bearings as part of their operative language; and (3) historical seal evidence, where identifying the tincture of a seal impression — even in an engraved or wax medium — may bear on the authenticity or dating of a document.
Researchers working with early English legal records should be alert to the fact that heraldic language in enrolled grants, patent rolls, and charter rolls was treated as legally precise. A mistranscription of a tincture name in a copy could create title disputes. The conventional engraving notation (vertical lines for gules) is a researcher's tool for reading illustrated legal documents and seals where color was not preserved.
In American legal practice, gules has almost no operative role — the United States has no system of legally regulated heraldry — but it appears in historical corporate seals, state and municipal arms, and the seals of some courts and official bodies. Researchers interpreting such devices in historical contexts should understand the conventional notation system.
Historical Dictionary Support
Black's Law Dictionary (1st and 2nd editions) and Bouvier's Law Dictionary are in close agreement, reproducing nearly identical definitions attributing the word's derivation to the Arabic gule (a rose) and crediting its introduction to the Crusaders. All three sources cite Wharton. The Black's 1st edition entry is notable for appending a cross-reference to GURGITES (wears), suggesting the entry was part of a broader heraldic vocabulary sweep rather than a response to any pressing legal controversy over the term itself.
What the historical dictionaries do not address is the functional legal significance of tincture nomenclature in the law of arms — they treat gules as a vocabulary item rather than examining when and why the precise blazon of a coat of arms had legal consequences. Researchers needing the substantive law of heraldic disputes must look beyond these dictionary entries to treatises on English armorial law and the records of the Court of Chivalry.
Jurisdictional Note
In England and Wales, the grant and regulation of arms falls under the jurisdiction of the College of Arms; in Scotland, under the Lord Lyon King of Arms, whose determinations have statutory force. In these jurisdictions, the precise blazon — including tincture names like gules — forms part of the legally operative grant. No comparable regulatory system exists in the United States, Canada (outside formal grants), or most common law jurisdictions outside the British Isles.
Encyclopedia Cross-Reference
See Law Mind Encyclopedia: Heraldry; Coats of Arms; Seals (Documentary Evidence)