nī^gro — Lewis & Short
nī^gro, āvi, ātum, 1, v. n. and
I a. [id.].
I Neutr., to be black:
ea, quae nigrant nigro de semine nata,Lucr. 2, 733.—
II Act., to make black, to blacken.
A Lit.:
mgrāsset sibi planctu lacertos,Stat. S. 2, 6, 83.—
B Trop., to make dark, to darken:
nigrati ignorantiae tenebris,Tert. adv. Marc. 4, 8.—Hence, nī^grans, antis, P. a., black, dark-colored, dusky: nigrantia boum cornua, Varr R. R. 2, 5:
nigrantes terga juvenci,Verg. A. 5, 97:
nigrantes alae,Ov. M. 2, 535:
nigrantes domos ammarum intrāsse silentūm,Prop. 3, 12, 33 (4, 11, 33):
nigrante profundo,the sea, Sil. 17, 258:
litora,Val. Fl. 4, 697:
aegis,i. e. that produces clouds, Verg. A. 8, 353.