Definition
Herislet is an archaic legal term from English law referring to the laying down of arms or, more specifically, desertion from the military. The term appears in feudal and early common law contexts as a designation for the act of abandoning one's military obligations — whether by formally surrendering arms or by unlawfully withdrawing from service.
Why It Matters in Research
Herislet is a term a researcher will encounter almost exclusively in early English legal sources, glossaries of feudal law, and antiquarian legal dictionaries. It has no modern operative meaning in any common law jurisdiction and does not appear in contemporary statutes or case law. Researchers working in feudal tenure, military obligation under the feudal system, or early English criminal law may encounter it in source documents or secondary glossaries. The primary trap is conflating it with related concepts of military desertion under modern law, which carries an entirely separate and developed body of statutory and military law. The term belongs to the stratum of feudal obligation rather than to any organized body of military criminal law as we understand it today. When encountered in historical records, its appearance often signals a document dealing with feudal military tenure, the obligations of knights or soldiers to their lord, or the consequences of abandoning those obligations.
Historical Dictionary Support
Bouvier's Law Dictionary provides the only dictionary support available, and it is notably sparse. Bouvier cites two sources: Blount, for the meaning of "laying down of arms," and Spelman's Glossary (Spel. Gloss.) for the meaning of "desertion from the army." Thomas Blount's Nomo-Lexicon (1670) and Sir Henry Spelman's Glossarium Archaeologicum are among the standard antiquarian English legal glossaries, and their agreement that herislet relates to military abandonment gives the definition reasonable authority for its period. What neither source fully clarifies is whether herislet carried formal legal consequences distinct from ordinary desertion — that is, whether it was a term of art with procedural significance in feudal courts or simply a descriptive word. The dictionary record does not resolve this, and the term's rarity across even early sources suggests it was archaic even by the time Bouvier was writing in the nineteenth century. Researchers should treat Bouvier's entry as a pointer to Blount and Spelman rather than as an independent authority.
Jurisdictional Note
Herislet is a term of English feudal law and does not appear to have been transplanted into American, Scottish, or colonial legal usage in any meaningful way. It has no operative legal significance in any modern jurisdiction.