lūcūbrātĭo (noun F) : lucubro
* A working by lamp-light, night-work, nocturnal study, lucubration.
* Lit.: per hiemem lucubratione haec facito,Cato, R. R. 37: lucubrationes detraxi,Cic. Div. 2, 68, 142: ista sunt tota commenticia, vix digna lucubratione anicularum,hardly worth the evening gossip of old women,id. N. D. 1, 34, 94: cannabis lucubrationibus decorticata purgatur,Plin. 19, 9, 56, § 174: est enim lucubratio, quoties ad eam integri ac refecti venimus, optimum secreti genus,Quint. 10, 3, 27: et vigilandae noctes, et fuligo lucubrationum bibenda,id. 11, 3, 23.
* Transf., any thing done or composed at night, night-work, lucubration: perire lucubrationem meam nolui, i. e. epistolam noctu scriptam,Cic. Fam. 9, 2, 1.—As title of a work by Bibaculus, Plin. praef. § 24.

s. TLL