Definition
To unlawfully take, kill, or capture wild game, fish, or other wildlife without legal right or in violation of applicable game laws. At common law, poaching referred specifically to the theft of game from another person's land — trespassing for the purpose of taking wild animals that the landowner had a possessory right to, or that were protected by royal or manorial privilege. In modern usage, the term extends broadly to any illegal taking of wildlife, whether on private land, public land, or in protected waters, and includes violations of licensing requirements, hunting seasons, protected species designations, and bag limits.
Common Language
Modern common usage (Wiktionary): To cook something in simmering or very hot liquid. Secondarily, in informal modern English, to recruit or entice someone away from a competitor — "poaching employees."
Historical common usage (Webster's 1913): Both the culinary sense and the game-theft sense appear: "to rob of game; to pocket and convey away by stealth, as game; hence, to plunder."
The gap is significant. The culinary meaning and the colloquial employment meaning are completely unrelated to the legal definition. Within legal contexts, however, even the informal modern use of "poach" to mean recruiting away a competitor's employees or clients occasionally appears in unfair competition and trade secret litigation — but this is a non-technical usage, not a legal term of art. Researchers should not conflate this commercial connotation with the wildlife-law meaning.
Common Confusion
Poaching is sometimes loosely equated with simple trespass, but the two are distinct. Trespass addresses the unauthorized entry onto land; poaching addresses the taking of game, with or without trespass in some modern regulatory frameworks. A person may violate fish and game laws on public land without committing any trespass. Conversely, a trespasser who enters private land and takes nothing is not a poacher. The two offenses may overlap — and historically almost always did — but they are analytically separate.
Why It Matters in Research
The definition of poaching has undergone a quiet but substantial transformation that historical sources do not capture. Black's 2nd Edition and Rapalje & Lawrence both define the term exclusively as stealing game "on a man's land," which reflects the English common law framework rooted in landowner rights and manorial game privileges. This is an incomplete and potentially misleading definition for any research involving modern wildlife law.
By the twentieth century, poaching in American law is primarily a statutory and regulatory offense, governed by state fish and game codes and federal statutes such as the Lacey Act, which criminalizes trafficking in illegally taken wildlife across state and international lines. The landowner-rights framing has largely been displaced by a public-trust doctrine under which wildlife is held in trust for the people and managed by the state. This shift means that poaching can occur entirely on public lands — or even on one's own property, if the animal is taken out of season, without a license, or in violation of protected species rules.
Researchers consulting historical dictionary sources for poaching doctrine should treat those definitions as describing the common law baseline only, not the operative legal standard in any modern American jurisdiction. The term's expansion tracks the broader development of conservation law and the public trust doctrine, and the two threads — common law game theft and modern regulatory violation — sometimes appear in the same case law without clear distinction.
International research adds another layer: poaching of endangered species is now a significant subject of international law and treaty obligation, connecting the term to CITES (the Convention on International Trade in Endangered Species) and transnational criminal enforcement frameworks entirely absent from any historical legal dictionary entry.
Historical Dictionary Support
Black's 2nd Edition and Rapalje & Lawrence are in complete agreement: "to steal game on a man's land." Both entries are brief to the point of being skeletal, which reflects the term's status in their era as a relatively self-evident common law concept rather than a complex legal doctrine. The emphasis on a "man's land" is consistent with English game law, which tied the right to take game to land ownership and social rank — a framework largely inherited by early American common law before being supplanted by the public trust model.
What the historical sources miss entirely is the regulatory dimension. They describe an act of theft against a private party. Modern poaching law is primarily a regulatory offense against the state's management authority over wildlife as a shared public resource. This is not a refinement of the historical definition — it is a reconceptualization of who is injured and why the taking is unlawful.
Jurisdictional Note
All U.S. jurisdictions have statutory poaching and wildlife protection schemes, but the specific offenses, penalties, and definitions vary considerably. Federal law (particularly the Lacey Act and the Endangered Species Act) overlaps with state law and can elevate state violations to federal offenses when illegal wildlife crosses state lines. Researchers should consult the applicable state fish and game code alongside any federal overlay.