Definition
"Main" appears in legal sources primarily as an archaic term derived from the Law French and Latin (manus), meaning a hand. In this sense it is more commonly encountered in historical texts as "meyn" and connects to older procedural and evidentiary concepts tied to the hand — most notably the hand as an instrument of oath-taking, identity, and physical capacity.
Beyond its archaic nominal use, "main" survives in modern legal discourse chiefly as a modifier or component of compound legal terms — most importantly the main purpose doctrine (also called the leading object rule) in contract law, which determines when an oral promise to answer for another's debt falls outside the Statute of Frauds.
The term also appears in older criminal law texts in the context of maiming, where a "main" or mutilation denotes a permanent injury depriving a person of the use of a limb or bodily member, though this usage has largely been absorbed by the standalone term MAYHEM (or MAIM).
Common Language
Modern common usage (Wiktionary): "Main" as an adjective means chief, principal, or primary. As an adverb (now dialectal or archaic), it means exceedingly or greatly.
Historical common usage (Webster's 1913): A hand or match at dice; a stake played for at dice; the largest throw in a match at hazard; a match at cockfighting.
The gap between the common and legal meanings is historically significant. In ordinary 18th- and 19th-century English, "main" as a noun referred to gambling contests — dice games and cockfights. The legal term, by contrast, derives from the Latin manus (hand) through Law French, with no connection to gambling. A researcher encountering "main" in historical legal pleadings or procedural texts should not assume the gaming sense; conversely, "main" in period literature is almost never the legal term.
Common Confusion
"Main" as it appears in historical criminal law entries is easily conflated with MAYHEM and MAIM. The Black's 2nd edition entry reproduced in the source material is actually a fragment of the entry for MAIM — describing the criminal offense of mutilation — not a standalone legal concept called "main." Researchers should treat historical dictionary entries using "main" in the mutilation sense as part of the mayhem/maim cluster, not as an independent term.
Why It Matters in Research
The primary research value of this entry is navigational: "main" as a standalone legal term is rare and largely archaic, but it appears as a building block in several active legal concepts that researchers encounter constantly.
1. Main purpose doctrine. The most important modern legal use. When a promisor's leading object in guaranteeing another's debt is to secure a personal economic benefit, courts take the promise outside the Statute of Frauds even without a writing. Researchers tracing this doctrine should use the encyclopedia cross-reference above and search for "leading object rule" as an alternative label in older sources.
2. Historical pleading and procedure. "Main" as manus (hand) surfaces in historical pleading contexts — mainprise, mainpernable, mainour — all derived from the same root. A researcher who does not recognize the manus etymology may fail to connect these terms when searching the corpus.
3. Source fragmentation warning. The Black's 2nd edition entry in the source material is a corrupted OCR fragment that has been misattributed to "main" when it clearly belongs to the MAIM entry. This is a live trap in digitized historical legal dictionaries: OCR errors and alphabetical proximity cause entries to bleed into one another. Verify any short or fragmentary entry against surrounding headwords before relying on it.
4. Bouvier cross-reference anomaly. The Bouvier entry associates "main" with recrimination in criminal law, just compensation, and insurance — almost certainly an artifact of dictionary page-bleed in the digitized source, not a genuine definitional cluster. Do not treat these associations as substantive.
Historical Dictionary Support
Black's (1st ed.) and Burrill agree on the core meaning: main is Law French for "hand," from Latin manus, and is more commonly written "meyn." This is the extent of the standalone legal definition, and both sources implicitly acknowledge the term's importance lies in its derivative compounds rather than in itself.
Black's 2nd edition's entry, as noted, is a fragment of the MAIM entry and illustrates how the historical dictionaries' alphabetical organization and the physical condition of source volumes can create false entries in digitized form. The fragment does preserve useful language — permanent injury, deprivation of use of a limb, rendering a person lame or defective in bodily vigor — which accurately reflects 19th-century maiming doctrine.
Bouvier's entries are unreliable for this headword as presented; the associations with recrimination and the Latin maxims appear to be spillover from adjacent entries. The Latin maxim fragment (quod minus est in obligationem…) is a genuine Bouvier maxim relating to contract formation at the lesser price offered, but its connection to the headword "main" is an artifact of source corruption, not editorial intent.
No historical dictionary source addresses the main purpose doctrine, which developed primarily through 19th- and 20th-century case law rather than treatise definition.
Jurisdictional Note
The main purpose (leading object) doctrine is recognized in most American jurisdictions as an exception to the Statute of Frauds, but its scope varies. Some states apply it narrowly, requiring that the promisor's benefit be direct and substantial; others apply it more broadly. Researchers should not assume uniform application across state Statute of Frauds provisions.
Encyclopedia Cross-Reference
Suretyship — Formation and Statute of Frauds (Main Purpose Doctrine), The Law Mind Contracts & Commercial Law Encyclopedia