Definition
In English law, a sough is a drain or water-course, specifically the channels and underground passages constructed or used to drain mines. The term is a term of art in English mining law. Mines situated near a given sough, lying within the same level and benefiting from its drainage, are said to lie "within the title of that sough" — a designation that carries legal significance for rights and obligations associated with the drainage works.
Common Language
Modern common usage (Wiktionary): Sough appears as a proper noun designating a hamlet in Lancashire, England.
Historical common usage (Webster's 1913): Webster's records "sough" as an obsolete term for a sow, attributed to Chaucer.
Neither common usage reflects the legal meaning. The legal term is a technical term of English mining law with no meaningful connection to the common word. Researchers encountering "sough" in historical English legal documents should not rely on any ordinary dictionary definition.
Common Confusion
Sough should not be confused with the related but distinct concept of a general watercourse or drainage easement. While a sough functions as a water-course, the term in mining law carries a specific technical meaning tied to mine drainage and the "title" of the sough — a framework that determines which neighboring mines fall within its drainage area and are therefore subject to its legal regime. General drainage and water-course law operates on different principles. The term also should not be confused with "sewer" in the older English legal sense (an artificial drain), though the functional overlap can cause confusion in historical documents.
Why It Matters in Research
Sough is a narrowly specialized term that appears almost exclusively in English mining law sources and is essentially absent from American legal materials. Researchers working in historical English property, mining, or water rights records — particularly those involving the lead and coal mining regions of Derbyshire, Yorkshire, and Lancashire — are most likely to encounter it.
The key research trap is the phrase "within the title of that sough." This is not a straightforward property title concept; it is a term describing a mine's positional and functional relationship to a drainage channel, which in turn could determine liability for drainage costs, rights to use the sough, and entitlements as between mine operators. Researchers accustomed to modern water rights or easement frameworks may misread the significance of this phrase.
Both Black's editions cite 5 Mees. & W. 228, which is a reference to the English reporter series Meeson and Welsby (Exchequer Reports), and to Brown — likely Brown's Law Dictionary or a similarly named reference work. These sources are the appropriate starting point for tracing the doctrine in depth. The term will not appear in American legal corpus materials with any doctrinal substance, so research should be directed toward English primary and secondary sources.
The term is largely obsolete even in English legal practice, having been absorbed into modern mining and drainage statutory frameworks. Its appearance in a document is itself a signal that the document is historical and English in origin.
Historical Dictionary Support
Both Black's editions are in precise agreement, reproducing the same definition word for word, with only a minor typographical difference ("English" vs. "Engllsh") between them. This verbatim repetition suggests the second edition drew directly from the first without independent research or update — researchers should not treat the two entries as independent corroboration.
Brown's Law Dictionary (the "Brown" citation) and the Meeson and Welsby reporter are the underlying authorities cited, but neither Black's edition elaborates on the substantive legal doctrine beyond the definitional statement. This is a limitation: the entries establish what a sough is and the basic concept of "lying within its title," but they do not explain the legal consequences that flow from that relationship — costs, rights of access, obligations of maintenance, or the basis for apportioning drainage benefits among mine operators. Researchers should not assume Black's has captured the full legal picture.
No American legal dictionary in the corpus includes this term, which is consistent with its exclusively English application.
Jurisdictional Note
Sough is a term of English law only, rooted in the mining customs and statutory frameworks of specific English mining regions. It has no recognized equivalent in American, Scottish, or other common law jurisdictions. Any document using this term in a legal sense is almost certainly English in origin.