'Lacunaria' definitions:

Definition of 'Lacunaria'

From: GCIDE

Lacunar \La*cu"nar\, n.; pl. E. Lacunars (l[.a]*k[=u]"n[~e]rz), L. Lacunaria (l[a^]k`[-u]*n[=a]"r[i^]*[.a]). [L.] (Arch.) (a) The ceiling or under surface of any part, especially when it consists of compartments, sunk or hollowed without spaces or bands between the panels. --Gwilt (b) One of the sunken panels in such a ceiling. [1913 Webster]