| Singular | Plural | |
|---|---|---|
| Nominativ | armilla, armillaeque | armille, armillae |
| Genitiv | armille, armillae, armillai | armillarum, armillum |
| Dativ | armillai, armille, armillae | armillabus, armillis, armillisque |
| Akkusativ | armillam | armillas |
| Ablativ | armilla, armillad, armillaeque | armillabus, armillis, armillisque |
| Vokativ | armilla, armillaeque | armille, armillae |