Dictionary entry

Lacunar (2)

Webster's Dictionary 1913

La‐cu″nar, n.; pl. E. Lacunars (#), L. Lacunaria (#). (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.