出典:Wiktionary
出典:『Wiktionary』 (2026/08/14 04:16 UTC 版)
From Proto-Italic *klaudtrom, from Proto-Indo-European *kleh₂ud- (“key, hook, nail”) + *-trom (“instrumental suffix”). Equivalent to claud- (“to close, enclose”) + -trum.
Related to Latin clāvis (“key”), clāvus (“nail, peg”), claustra (“dam, wall, barricade, stronghold”). Cognate with Ancient Greek κλείς (kleís, “bar, bolt, key”), Old High German slioȥan (“to close, conclude, lock”), Old Saxon slūtan (“to close, conclude, lock”).
claustrum n (genitive claustrī); second declension
Second-declension noun (neuter).
| singular | plural | |
|---|---|---|
| nominative | claustrum | claustra |
| genitive | claustrī | claustrōrum |
| dative | claustrō | claustrīs |
| accusative | claustrum | claustra |
| ablative | claustrō | claustrīs |
| vocative | claustrum | claustra |
Through Vulgar *clōstrum (and its plural *clōstra ):
Borrowings: