lūcū̆brātĭuncŭla, ae, f. dim. [lucubratio], a working by night, sitting up at night (post-Aug.).
I Lit., Marc. Aur. ap. Front. ad Ep. M. Caes. 1, 3 Mai.—
II Transf., night-work, lucubration , Gell. N. A. praef. § 14.