Meaning of lacunar

la•cu•nar

Pronunciation: (lu-ky'nur), [key]
— n., pl. adj. la•cu•nars, lac•u•nar•i•a
—n.
    1. a coffered vault, ceiling, or soffit.
    2. coffer (def. 4).
—adj.
  1. lacunal.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.