Bible Dictionaries
Lacunar

Webster's Dictionary

(1):

(n.) The ceiling or under surface of any part, especially when it consists of compartments, sunk or hollowed without spaces or bands between the panels.

(2):

(a.) Pertaining to, or having, lacunae; as, a lacunar circulation.

(3):

(n.) One of the sunken panels in such a ceiling.

Bibliography Information
Webster, Noah. Entry for 'Lacunar'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​l/lacunar.html. 1828.