Deklinationen
| Singular | Plural | |
|---|---|---|
| Nominativ | singular sg lacūna  | plural pl lacūnae  | 
| Genitiv | singular sg lacūnae  | plural pl lacūnārum  | 
| Dativ | singular sg lacūnae  | plural pl lacūnīs  | 
| Akkusativ | singular sg lacūnam  | plural pl lacūnās  | 
| Ablativ | singular sg lacūnā  | plural pl lacūnīs  | 
| Vokativ | singular sg lacūna  | plural pl lacūnae  |