lăcūno, āvi, ātum, 1, v. a. [lacuna]. *
I To hollow out, to fret or pit : lacunati tori, Plin. 15, 10, 9, § 35.—
II To panel like a lacunar: summa lacunabant alterno murice conchae, Ov. M. 8, 564.
lacūnō —, —, āre lacuna, to panel, chequer , O. ...
An Elementary Latin Dictionary