Definition
A catapulta (plural: catapultae) is a term appearing in Roman and civil law sources to describe a mechanical engine of war used to hurl projectiles — typically bolts, darts, or stones — at enemy forces or fortifications. The term carried legal significance in classical Roman law chiefly in contexts involving the ownership, regulation, and requisitioning of military equipment, as well as in discussions of *res publicae* (public things) and instruments dedicated to state defense. It has no living legal meaning in modern common law systems and appears in contemporary legal research almost exclusively in the context of Roman law, historical military law, and the interpretation of classical civil law texts.
Common Language
Modern common usage (Wiktionary): A Roman catapult; a weapon for launching projectiles.
Historical common usage: The term is directly borrowed from Latin with no meaningful divergence between its ordinary and technical senses in English usage.
Editorial note: Unlike many terms that migrate from common to legal usage with altered meaning, *catapulta* travels in the opposite direction — from a Roman legal and military context into English legal dictionaries purely as a civil law reference. Researchers encountering it in English-language legal sources should understand it as a term of art in Roman law commentary, not as a word that carries any independent legal definition in English common law.
Why It Matters in Research
This term is almost exclusively a Latin civil law term and will surface in research in three narrow contexts: (1) translation or commentary on Roman legal texts, particularly the Digest or Justinian's corpus, where military equipment and *res militares* are discussed; (2) historical treatises on the law of war that draw on classical sources; and (3) glossaries appended to civil law editions where Latin military vocabulary is catalogued alongside legal terms.
Researchers should be cautious not to treat Black's entry — which is itself brief and purely definitional — as evidence that *catapulta* had any operational legal meaning in Anglo-American common law. Its inclusion in Black's reflects that edition's broader practice of cataloguing Latin and civil law terms encountered in legal literature, not that the term was ever litigated or applied in common law courts.
If your research touches on the legal status of weapons or military equipment in Roman law, the productive path leads away from this term as a standalone entry and toward the Roman law categories of *res publicae*, *res communes*, and the treatment of instrumenta belli in classical sources. No meaningful jurisdictional variation exists because the term has no living legal application.
Historical Dictionary Support
Black's Law Dictionary defines *catapulta* simply as "A catapult. A warlike engine to shoot darts; a cross-bow." The entry is among the shortest in the dictionary and offers no legal context, doctrinal application, or citation to Roman legal authority. Its presence reflects the nineteenth-century common law dictionary tradition of incorporating civil law and Latin vocabulary as reference material for practitioners reading classical sources, rather than as terms with any transactional or procedural significance.
No other major historical legal dictionaries in the Law Mind corpus — including Bouvier's Law Dictionary or Tomlin's Law Dictionary — are noted as sources for this entry. The Black's definition aligns with the Wiktionary definition and with standard Latin military vocabulary. There is no meaningful divergence across sources, which is itself informative: this is a descriptive cataloguing entry, not a term that generated legal controversy, doctrinal refinement, or interpretive disagreement.