nūbĭlo
v. a. and n.
I.
to be cloudy or overcast; to make cloudy, to overcast.
I.
Lit.: si nubilare coeperit, Varr. R. R. 1, 13, 5.—
(b).
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.