出典:Wiktionary
Maybe from a Proto-Indo-European root common with Lithuanian sìlis (“crib”) and sìlė (“trough”)[1].
sīnum n (genitive sīnī); second declension
Second-declension noun (neuter).
| Case | Singular | Plural |
|---|---|---|
| Nominative | sīnum | sīna |
| Genitive | sīnī | sīnōrum |
| Dative | sīnō | sīnīs |
| Accusative | sīnum | sīna |
| Ablative | sīnō | sīnīs |
| Vocative | sīnum | sīna |
出典:Wikipedia