Is “Lacunar” a Scrabble word?
Yes
LACUNAR
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Lacunar
noun
1.A sunken panel or coffer in a ceiling or a soffit.
2.A ceiling containing panels of this kind.
adjective
1.Of or pertaining to a lacuna
Synonyms: lacunal