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出典:Wiktionary
Borrowed from Ancient Greek ἀστακός (astakós, “smooth lobster”).
Second-declension noun.
| Case | Singular | Plural |
|---|---|---|
| Nominative | astacus | astacī |
| Genitive | astacī | astacōrum |
| Dative | astacō | astacīs |
| Accusative | astacum | astacōs |
| Ablative | astacō | astacīs |
| Vocative | astace | astacī |