nūbĭlo, v. a. and n. [nubilum], to be cloudy or overcast; to make cloudy, to overcast.
I Lit.: si nubilare coeperit, Varr. R. R. 1, 13, 5.—
β Impers. pass. : ubi nubilabitur, Cato R. R. 88, 2.—
B Transf., to be cloudy, dull : nubilans fulgor carbunculi, Plin. 37, 7, 25, § 94.—
II Trop., to cloud over, to obscure (post-class.): lucem dei, Paul. Nol. Carm. 10, 37.