出典:Wiktionary
出典:『Wiktionary』 (2026/04/26 23:34 UTC 版)
Perhaps inherited from Proto-Indo-European *lówh₃trom with analogical remodeling after lavō (“to wash, bathe”) and a secondary recharacterization with -brum. However, it is also possibly an innovative Latin formation from lavō + -brum.
Compare Gaulish lautron, Old Irish loathar (< Proto-Celtic *lowatrom), Proto-Germanic *lauþrą, Ancient Greek λουτρόν (loutrón) and Mycenaean Greek *𐀩𐀺𐀵𐀫 (*re-wo-to-ro /*lewotron/) (< Proto-Hellenic *lewotrón). Compare the Celtic-origin place-names Lavatrae and Laudradum.
Second-declension noun (neuter).
| singular | plural | |
|---|---|---|
| nominative | lavābrum | lavābra |
| genitive | lavābrī | lavābrōrum |
| dative | lavābrō | lavābrīs |
| accusative | lavābrum | lavābra |
| ablative | lavābrō | lavābrīs |
| vocative | lavābrum | lavābra |