Definition
A Latin term from the civil law denoting a husband's sister — that is, a sister-in-law as viewed from the wife's perspective. The term appears in Roman legal texts classifying degrees of family relationship and affinity, particularly in the context of inheritance and the obligations arising from kinship by marriage.
Common Language
Modern common usage (Wiktionary): An abbreviation for Gloucestershire, a county in England.
Historical common usage: No entry in Webster's 1913; the term did not enter general English usage.
The gap here is total rather than partial. The modern abbreviation "glos" (lowercase) is a geographic shorthand with no connection to the Latin legal term. A researcher encountering "glos." in a historical document must assess context carefully: the legal term is always capitalized in Latin usage and appears in genealogical, inheritance, or affinity classification contexts, while the geographic abbreviation appears in addresses and county references.
Why It Matters in Research
GLOS is a term of narrow technical application that surfaces primarily in two contexts within the Law Mind corpus: (1) transcriptions or analyses of Roman and civil law texts dealing with degrees of affinity and consanguinity; and (2) historical common law treatises that incorporated civil law kinship terminology when discussing prohibited degrees of marriage, inheritance rights, or claims under Roman-influenced systems.
Researchers working in equity, ecclesiastical law, or early American and colonial inheritance disputes may encounter the term when sources classify relatives by marriage. The significance of identifying a glos — a husband's sister — lies in whether that relationship created legally cognizable obligations or rights under the applicable system. Under Roman law, the classification of relatives by precise terminology (glos, amita, matertera, etc.) determined eligibility to inherit in intestate succession under the scheme of the Digest.
A key navigational trap: historical legal dictionaries occasionally conflate or compress entries. The Black's 1st edition entry as transmitted contains a parenthetical fragment — "a valley or glen, Co. Litt. 5b" — that appears to be a typographical intrusion from an adjacent entry (likely GLOS in the geographic or topographical sense, related to the term "close" or a variant). The 2nd edition of Black's corrects this and presents a clean definition. Researchers relying on the 1st edition transcription should treat that fragment with caution and cross-check against the 2nd edition and Burrill, both of which confirm the definition without the extraneous phrase.
Historical Dictionary Support
All three source dictionaries agree on the core definition: GLOS is a Latin civil law term meaning a husband's sister. The citation to Digest 38, 10, 4, 6 is consistent across all three, and that passage in Justinian's Digest deals with the classification of cognates and those related by affinity for purposes of succession and the praetor's edict.
The Latin dictionary tradition confirms the term's classical pedigree: glos, glōris (feminine) is attested in Festus, Charisius, and Ausonius, and its Greek cognate (γάλως / gálōs) reflects a shared Indo-European root. The gender and declension are stable across all sources.
What historical dictionaries do not address is the practical procedural significance of the term in any common law jurisdiction — because there was none of independent weight. GLOS entered English legal dictionaries as a civil law reference term rather than as a term with active common law application. Burrill's entry, characteristically terse, offers no elaboration beyond the citation, suggesting the editors treated it as definitional rather than operationally significant.
Jurisdictional Note
The term has no independent operative significance in common law jurisdictions. Its appearance in American or English legal sources is almost exclusively through scholarly or comparative reference to Roman and civil law. Researchers in Louisiana, Quebec, or other mixed civil law jurisdictions may find closer operational relevance in historical succession statutes that tracked Roman kinship classifications.