lacunarium Save Lewis & Short DMLBS Latino-Sinicum Du Cange lăcūnārĭum, ii, v. lacunar. lacunarium v. lacunar lacunarium , ii. n.天花板。棚板。望板。Suggest a TranslationSee an image LACUNARIUM, ὀρόφωσις Laquear, in Supplemento Antiquarii. In aliis Glossis : Lacunarium, λίμνη, (Lacus) ὀρόφωσις. Genitivo plurali Lacunariorum usus est Vitruvius lib. 4. cap. 3.