Definition
Grosse bois (Law French) means timber — specifically, the large or standing trees on land capable of use as timber. The term appears in older English property and forest law to distinguish substantial timber trees from underwood, brush, or lesser vegetation. It carried practical legal weight in contexts involving rights over land, since ownership of or rights to grosse bois could be held separately from ownership of the soil itself, and the right to take timber was often the subject of grants, leases, and forest law disputes.
Why It Matters in Research
This is a term encountered almost exclusively in historical English property law sources, forest law materials, and older conveyancing instruments. Researchers should be aware of several traps:
First, grosse bois is part of a broader vocabulary of Law French terms distinguishing types of vegetation and the legal rights attached to them. The distinction between grosse bois (timber) and subbois or underwood was legally significant because different parties could hold rights to each on the same parcel. A grant of land did not automatically convey the timber, and vice versa. Reading older deeds or forest records without sensitivity to this distinction will produce misreadings.
Second, historical sources treat this term with notable brevity — Black's (both editions) and Bouvier's each define it in a single word: "timber." This compression obscures the legal texture of the term. Researchers relying solely on dictionary authority will not find guidance on how grosse bois interacted with doctrines of waste, the law of estovers, or the distinction between the right to take timber for specific purposes versus an outright right of ownership in the trees. Those doctrines must be pursued through treatises on English property and forest law.
Third, the term may appear in close proximity to related Law French vocabulary — particularly bois, subbois, and estovers — in primary sources. The Cowell citation across both Black's editions points to John Cowell's The Interpreter (1607), the primary lexicographical source for this and many similar Law French property terms. Researchers working in pre-19th century property materials should treat Cowell as a primary dictionary source, not merely a secondary one.
Fourth, this term has no meaningful modern American legal usage. Its appearance in U.S. research contexts will be confined to historical land grant documents, particularly those tracing title through colonial or early English land tenure systems, or in academic treatment of common law property doctrine.
Historical Dictionary Support
The historical dictionaries are in complete agreement on the core definition — all three sources reduce grosse bois to the single English equivalent "timber" — and all trace the authority to Cowell. This unanimity reflects the term's status as settled Law French vocabulary rather than a contested or evolving legal concept. Bouvier adds the adjacent entry GROSSEMENT, which is unrelated but illustrates the proximity of Law French terms sharing the grosse root (from the French for large or great), useful context for understanding the term's linguistic frame.
What the historical sources omit is any discussion of the legal implications of the concept: who held rights to grosse bois, how those rights were carved out in grants, how the distinction between timber and underwood was policed, or how forest law regulated taking. For that analysis, researchers must turn to treatises such as Manwood's Treatise and Laws of the Forest (various early editions) or Coke's commentary on property rights in real actions.
Jurisdictional Note
Grosse bois is a term of English common law origin with no distinct American doctrinal development. It may appear in historical materials from jurisdictions whose property law descends from English common law, but it carries no jurisdiction-specific variation worth tracking. Modern timber and forestry rights are governed entirely by statutory frameworks with no terminological connection to this Law French vocabulary.