Definify.com
Webster 1913 Edition
Lacunar
{
La-cu′nal
(lȧ-kū′nal)
, La-cu′nar
(lȧ-kū′nẽr)
, } Adj.
Pertaining to, or having, lacunæ;
as, a
. lacunar
circulationLa-cu′nar
,Noun.
pl. E.
Lacunars
(lȧ-kū′nẽrz)
, L. Lacunaria
(lăkˊū̍-nā′rĭ-ȧ)
. [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.
Webster 1828 Edition
Lacunar
LAC'UNAR
,Noun.