陷窝的; 陷窝性的; 花格平顶
Lacunal \La*cu"nal\, Lacunar \La*cu"nar\, a. Pertaining to, or having, lacun[ae]; as, a lacunar circulation. Lacunar \La*cu"nar\, n.; pl. E. {Lacunars}, L. {Lacunaria}. [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.