Definition
Latin (Law Latin). A term from medieval English law meaning sharp-edged weapons — swords, battle-axes, and similar bladed instruments that cut and wound — as distinguished from blunt instruments such as sticks and stones, which only break or bruise. The distinction was legally significant in classifying the nature of a wound or the gravity of an assault or homicide, particularly in the Bracton-era analysis of criminal acts.
Common Language
Modern common usage (Wiktionary): No entry. The phrase is not current in ordinary English.
Historical common usage (Webster's 1913): No entry. The Latin phrase had no common English circulation.
This is pure Law Latin with no common-language counterpart. The individual words — arma (arms, weapons) and moluta (ground, sharpened) — are Latin, but the compound phrase existed only as a legal term of art in medieval English legal writing. No COMMON LANGUAGE gap analysis is required.
Common Confusion
Arma moluta should not be confused with arma emolita, an alternate form of the same phrase appearing in Fleta. Burrill notes the two as equivalent, with arma emolita appearing specifically in Fleta lib. 1, c. 33, and arma moluta in Bracton fol. 144b. Researchers encountering either form in medieval sources should treat them as synonymous. Neither form should be confused with the general term arma, which in medieval legal Latin could refer broadly to weapons, armor, or heraldic arms depending on context.
Why It Matters in Research
This term appears almost exclusively in the context of medieval English criminal law scholarship and its primary sources — Bracton and Fleta — rather than in reported cases or statutes. Researchers working in the Law Mind corpus should be alert to the following:
First, the term belongs to a specific stratum of legal writing. Bracton's De Legibus et Consuetudinibus Angliae and Fleta are the authoritative homes for this distinction; you are unlikely to encounter arma moluta in post-medieval common law reports, where the blunt/sharp weapon distinction, if relevant at all, would be expressed in plain English or under different doctrinal headings.
Second, the classification had practical legal weight in the medieval period. The nature of a wound — whether inflicted by a sharp or blunt weapon — bore on assessments of felonious intent, the character of an assault, and potentially the determination of homicide versus lesser offenses. Researchers tracing the history of assault, battery, or wounding offenses should note this as an early attempt to create legally relevant weapon taxonomy.
Third, the alternate form arma emolita creates an indexing trap. A search for only one form will miss the other in corpus searches. Both Bracton and Fleta should be checked independently, as they use different variant spellings of what appears to be the same concept.
Fourth, this term is of limited practical value in modern legal research and has no current statutory or doctrinal application. Its research value is historical and comparative — useful for understanding how medieval jurists structured criminal liability around the instrumentality of harm.
Historical Dictionary Support
The three source dictionaries agree on the core substance: arma moluta denotes sharp, cutting weapons distinguished from blunt instruments. All three anchor the definition to the same primary sources — Bracton fol. 144b and Fleta lib. 1, c. 33, par. 6 — which is itself instructive: the term's entire lexical life appears traceable to two medieval treatises.
Burrill is the most precise of the three, identifying swords and battle-axes as exemplars, noting the alternate form arma emolita, and flagging both primary sources by folio and section. Black's is the most spare, citing only Fleta. Rapalje & Lawrence follows Bracton and adds Cowell's legal dictionary to the chain of authority, though without elaboration.
None of the three dictionaries extends the term beyond its medieval context or offers any modern application, which itself signals the term's status as a historical relic of the law rather than a living doctrine. The absence of case law in any of the three entries is consistent with a term that never entered the common law reports as a doctrinal category in its own right.
Encyclopedia Cross-Reference
See Law Mind Encyclopedia: History of Criminal Law | Medieval English Law | Assault and Battery (Historical Development)