出典:Wiktionary
出典:『Wiktionary』 (2026/09/14 02:01 UTC 版)
From the genus name, from Latin rubus.
rubus (plural rubuses)
From Proto-Italic *wruðos, from Proto-Indo-European *(H)wr̥dʰo- (“sweetbriar”) (compare dialectal Norwegian erre, orr (“bush”), Albanian hurdhe (“ivy”), Old Persian *vr̥dah (“flower, rose”), 古期英語 word (“thornbush”)), from a root *Hwerdʰ- (“to grow?”). See rosa.
Alternatively of a substrate origin shared with Albanian rrabe (“maquis, rocky desert with shrubs”), assuming an earlier meaning *“heath, shrub”.
rubus m (genitive rubī); second declension
Sometimes treated as a feminine noun, but still
Second-declension noun.
| singular | plural | |
|---|---|---|
| nominative | rubus | rubī |
| genitive | rubī | rubōrum |
| dative | rubō | rubīs |
| accusative | rubum | rubōs |
| ablative | rubō | rubīs |
| vocative | rube | rubī |