Definition
In legal usage, traverser carries two related but distinct meanings, both derived from the procedural concept of traverse — a formal denial.
1. In pleading: A party who traverses, that is, formally denies a material allegation made by the opposing party. The traverser takes issue with a specific factual or legal claim rather than admitting or demurring to it.
2. In criminal procedure: A prisoner or party under indictment. The label derives from the fact that an accused party was understood to be traversing — denying — the charges set out in the indictment. In Irish legal usage, the term was applied specifically to a prisoner in this posture.
The term is procedural and relational: who counts as the traverser depends on who is doing the denying in a given proceeding.
Common Language
Modern common usage (Wiktionary): One who traverses a region; something that traverses or moves, such as an index on a scale; one who traverses or denies; a traverse table.
Historical common usage (Webster's 1913): One who or that which traverses or moves, as an index on a scale. One who traverses or denies. A traverse table.
The ordinary senses of traverser — a person or thing that moves across something — share only surface resemblance to the legal meaning. In law, traverser is not about physical movement but about formal procedural denial. A researcher encountering the word in a general text should not assume the legal sense is intended; conversely, the legal meaning is considerably more specific than the common usage suggests.
Common Confusion
Traverser is sometimes loosely conflated with defendant, particularly in older criminal law texts. The distinction is procedural: a defendant is defined by their status as the party charged or sued; a traverser is defined by their act of denying the charge or allegation. In practice the two often coincide — an indicted party who pleads not guilty is both defendant and traverser — but the terms are not synonyms. A plaintiff could theoretically be a traverser in certain pleading postures. In old Irish criminal usage, however, traverser was used as a near-synonym for prisoner regardless of the precise procedural step involved.
Why It Matters in Research
Researchers working in pre-code common law pleading will encounter traverser frequently, but the term's meaning shifts depending on context. In pleading treatises and practice manuals, it is a technical procedural label. In criminal reports and indictment records — particularly Irish sources — it functions more loosely as a synonym for the accused. Failing to distinguish these contexts leads to misreading the procedural posture of a case.
The term virtually disappears from American legal writing after the adoption of code pleading in the mid-nineteenth century, which abolished the formal system of common law traverses. Researchers consulting pre-code American materials, English common law sources, or Irish legal records will encounter it with some regularity; those working in post-code American law will rarely if ever see it used as a live term of art.
Because traverser is defined entirely by reference to traverse, the two entries must be read together. A researcher who encounters traverser without understanding what a traverse is — the formal mechanism of specific denial, as distinct from a general issue or a demurrer — will not fully grasp what the traverser is doing in the proceeding. The procedural stakes of being a traverser (rather than, say, a party who confesses and avoids) could affect what issues were joined, what evidence was admissible, and how judgment was rendered.
The Burrill entry is notable for including Old Law French examples, signaling that the term's procedural lineage runs deep into medieval English and Norman practice. These quotations are useful for researchers working in Year Book materials or early English pleading records.
Historical Dictionary Support
The four source dictionaries agree closely on the core definition: one who traverses or denies; a prisoner or party indicted who has traversed the indictment. Black's (both editions) and Burrill track nearly identically. Rapalje & Lawrence adds the Irish usage — in Ireland, a prisoner — and gestures toward American constitutional law in connection with treason, though the relevant text appears to be a fragment from a longer entry on treason rather than a substantive gloss on traverser itself.
Burrill is the most historically grounded of the four, providing Old Law French citations from Britton (a thirteenth-century English legal treatise), which establish the term's deep roots in medieval pleading. This is useful for researchers who need to trace the concept further back than the early modern period.
None of the historical sources address the disappearance of traverser from active American legal vocabulary after code pleading reform, which is the single most important fact for a modern researcher to know.
Jurisdictional Note
In Irish legal usage, traverser was routinely used to mean prisoner or accused, somewhat more broadly than English pleading usage. American usage, where it appears at all, follows the English pleading sense. After the Field Code (New York, 1848) and the subsequent spread of code pleading, the term ceased to be a working term of art in most American jurisdictions.