Definition
The plea side of a court is the civil branch or department of a court that exercises jurisdiction over private actions and suits between parties, as distinguished from the criminal or crown side of the same court. The term reflects the historical organization of English superior courts — most notably the Court of Queen's (or King's) Bench — into distinct functional divisions: one handling civil litigation, the other handling criminal prosecutions and matters touching the Crown. Business transacted on the plea side was governed by procedural rules and officers separate from those operating on the criminal side, even though both divisions nominally constituted a single court.
Common Confusion
PLEA SIDE should not be confused with the word "plea" as used in modern criminal procedure, where it refers to a defendant's formal response to a charge (guilty, not guilty, or no contest). The two uses share a root but describe entirely different things. A defendant entering a plea in a criminal matter appears on the crown side of the court, not the plea side. The plea side is the civil side. This inversion is a persistent source of confusion when reading historical English court records.
Why It Matters in Research
This term is primarily a navigational tool for researchers working with English common law materials, particularly records and treatises from the seventeenth through nineteenth centuries. Several practical research points follow:
First, understanding the plea side / crown side division is essential for locating historical documents correctly. Writs, entries, and records were physically maintained in separate offices for each side, and indexing in historical sources follows that division. A researcher looking for a civil action in Queen's Bench must look to the plea side records; looking in crown side records will yield nothing.
Second, the term appears frequently in procedural treatises on common law pleading and in older editions of practice manuals governing the English superior courts. It is rarely used in American legal sources because American courts were not organized on the English dual-side model, though early American treatises that imported English procedural vocabulary occasionally use the phrase.
Third, the distinction carries interpretive weight when reading cases or commentary that describe the jurisdiction or procedure of Queen's Bench. Much of what English writers say about that court's civil jurisdiction — including the famous use of the bill of Middlesex to draw defendants into the court — applies specifically and exclusively to its plea side. Conflating the two sides produces a distorted picture of the court's operation.
Fourth, for corpus researchers in Law Mind, this term connects to entries on common law pleading, the structure of the English superior courts, and the historical development of civil procedure. It is not a live term in modern practice but is a structural term for understanding how historical legal materials were organized.
Historical Dictionary Support
Black's Law Dictionary provides the essential definition directly: the plea side is that branch of a court devoted to civil actions, distinguished from the crown or criminal side. The entry uses the Court of Queen's Bench as its primary illustration, which is appropriate — that court's dual structure was the most prominent example of the plea side / crown side division in English legal history.
Rapalje & Lawrence redirects readers to a cross-reference (PLEA, § 10) rather than defining the term independently, which suggests the editors treated it as a subordinate usage within the broader treatment of plea rather than a freestanding concept. This is consistent with how the term tends to appear in practice: embedded in procedural discussions rather than singled out for extended analysis.
Neither source traces the term's development over time or notes its decline in usage after the English Judicature Acts of the 1870s, which reorganized the superior courts and rendered the old plea side / crown side terminology largely obsolete. Researchers should be aware that post-Judicature Act materials will generally not use this term in its technical sense.
Encyclopedia Cross-Reference
Arraignment and Entry of Plea — The Law Mind Criminal Law Encyclopedia (criminal_198): useful for contrast, clarifying that modern plea procedure operates entirely outside the historical plea side framework.