Elucubro, elúcubras, pen. corr. elucubrâre: & Elúcubror, elucubrâris, elucubrári, Deponens. Colum. To watch and write by candle light.Elucubrare & elaborare.Cic.Elucus.He that is sicke of yesterdaies drincke: also a louer of trifles.
Lewis and Short: Latin dictionary
ē-lūcubro, āvi, ātum, 1, v. a. (elucu-bror, deponent: epistolam, quam eram elucubratus, Cic. Att. 7, 19), to compose by lamplight, i. e. at night, with great labor, Cic. Brut. 90 fin.; Tac. Or. 9; Col. 10 praef.fin.