Definition
An old English legal term, drawn from Latin, meaning a breaker — specifically, one who breaks or forces open something. The term appears almost exclusively in historical legal texts and has no practical currency in modern law. Its most common legal deployment was in the compound phrase fractores gaolarum (also rendered fractores gaiolorum), meaning prison-breakers or gaol-breakers: persons who broke out of lawful custody or forcibly breached the walls or security of a gaol.
Why It Matters in Research
FRACTOR is a term you will encounter only in medieval and early modern English legal sources — principally in treatises such as Fleta and Bracton, and in records drawn from that tradition. Researchers should be alert to two practical points.
First, the term rarely appears alone. It functions almost always as a component of a Latin compound or phrase. If you encounter FRACTOR in a primary source, the surrounding noun (gaolarum, sigilli, pacis, and so on) is what gives the offense its specific legal character. Searching for FRACTOR without accounting for its phrase context will return incomplete or misleading results.
Second, the underlying conduct — prison breach — persisted as a recognized offense long after the Latin terminology fell away. Later common law sources treat the same behavior under English-language headings such as prison breach or escape, and statutory developments eventually systematized the law of escape and rescue. A researcher tracing the history of custodial escape in English law must bridge the Latin register of Fleta and its contemporaries to the later English-language common law treatment; FRACTOR is the Latin-register terminus for that research thread.
Historical Dictionary Support
Burrill's Law Dictionary provides the only substantive coverage among the historical shelf dictionaries. Burrill's entry is spare but accurate: it identifies FRACTOR as Latin, translates it as "a breaker," and grounds its legal significance in Fleta (lib. 2, c. 52, § 12), where the term appears in connection with fractores gaolarum. This is representative of how narrowly the term was used — Burrill treats it as a term of art needing only a pointer to the source rather than extended doctrinal analysis.
The Latin dictionaries confirm that fractor, as a post-classical Latin noun, carried the straightforward meaning of "breaker" or "one who breaks in pieces," with attestation in Sidonius Apollinaris. This classical usage is purely descriptive and has no legal content of its own; the legal force derives entirely from the English common law context in which the term was adopted.
No other major historical legal dictionaries — not Jacob's Law Dictionary, not Tomlin's, not Black's early editions — give the term its own entry, which accurately reflects how marginal and source-specific this vocabulary was even within historical legal practice.