Definition
A bet is an agreement between two or more persons in which each contributes to a common stake, and the whole becomes the property of one or more of them depending on the outcome of a future uncertain event or the resolution of a disputed question. The term applies both to the contract itself and to the sum or thing wagered. "Bet" and "wager" are treated as synonymous in legal usage.
Common Language
Modern common usage (Wiktionary): Wiktionary's primary technical entry for "BET" references a surface-area measurement technique in materials science (the Brunauer–Emmett–Teller method), reflecting the acronym's scientific capture of the uppercase form. As a common word, "bet" means a wager — a sum staked on an uncertain outcome.
Historical common usage (Webster's 1913): "That which is laid, staked, or pledged, as between two parties, upon the event of a contest or any contingent issue; the act of giving such a pledge; a wager."
The common meaning and the legal meaning are closely aligned here — both describe a stake placed on an uncertain outcome. The legal definition adds precision: it specifies the contractual structure (mutual contribution, collective stake, single winner), which matters when courts must distinguish a bet from a gift, a loan, or a speculative contract. The ordinary speaker's sense of "bet" captures the social act; the legal definition captures the enforceable (or unenforceable) agreement.
Common Confusion
Bet vs. Wager: The historical dictionaries are unanimous that these terms are synonymous, and courts have generally treated them interchangeably. Neither term carries a technical distinction the other lacks. Some statutes regulating gambling use one term and not the other; in those contexts, researchers should check whether the legislature intended a distinction or simply used the terms as equivalents.
Bet vs. Speculation/Investment: Courts and commentators have sometimes struggled to distinguish a bet from a speculative financial contract. The operative distinction is mutual contribution to a common stake contingent on an uncertain event, versus a unilateral risk on a market outcome. This line matters for enforceability — wagering contracts are void or voidable at common law and under many gaming statutes, while speculative contracts generally are not.
Bet vs. Lottery: A bet typically involves two or more parties directly agreeing on terms. A lottery involves a prize distributed by chance among many participants who pay for the chance. The distinction affects which regulatory regime applies.
Why It Matters in Research
The primary research trap with "bet" is the enforceability question. At common law, wagering contracts were not automatically void, but statutes in England (particularly the Gaming Act 1845) and across American jurisdictions rendered most wagering agreements unenforceable. A researcher encountering a 19th-century American case involving a "bet" must determine the governing statute: some states voided wagering contracts entirely, some permitted recovery of the stake, and some distinguished bets on elections, horse races, or games of skill differently.
Bouvier's dictionary entry specifically flags bets on elections as a category requiring separate analysis — election wagers had their own statutory treatment in many jurisdictions, sometimes as a distinct offense, sometimes merely as unenforceable contracts.
The corpus will also contain cases turning on what counts as "an uncertain event." Courts examined whether a bet on a past event (unknown to the parties) qualified as a wager in the legal sense. The Black's 2nd edition definition — "an event at present uncertain, or according as a question disputed between them is settled" — captures this: both future-event bets and disputed-fact bets fall within the category.
For gaming law research, "bet" as a defined term appears in licensing statutes, criminal codes, and tax regulations, often with statutory definitions that may diverge from the common law formulation. Do not assume the common law definition controls in a regulatory context.
Historical Dictionary Support
The historical sources converge on the same core definition: a mutual agreement, a common stake, an uncertain outcome. Black's 1st edition and Anderson's both emphasize that "bet" and "wager" are synonymous and that both terms cover the contract and the amount. Black's 2nd edition offers the most formally structured definition, specifying mutual contribution, collective stake, and determination by future uncertain event or disputed question — closely tracking the formulation courts used when analyzing enforceability.
Burrill's entry for "BET" as indexed does not yield substantive content on the term itself (the retrieved passage concerns unrelated historical terms), indicating that Burrill's may not have included a standalone entry or that the entry is minimal. Bouvier's contribution is partial but notable for flagging election bets as a distinct category.
None of the historical dictionaries address the enforceability question in depth — they define the term without canvassing the statutory landscape that determined whether a bet could be sued upon. Researchers should treat the dictionary definitions as describing the transaction, not its legal consequences, and look separately to gaming statutes and case law for enforceability analysis.
Jurisdictional Note
American jurisdictions varied widely in their treatment of wagering contracts, from outright voidness to mere unenforceability to selective exceptions for certain categories (insurance, stock transactions, futures contracts). English and American approaches diverged particularly after mid-19th century gaming legislation. Any research touching on the enforceability of a bet must be anchored to the specific jurisdiction and time period.