ninguis

is, f.

kindr. with nix

I. snow (ante- and post-class.): albas descendere ningues, Lucr. 6, 736 (but id. 6, 964, the correct read. is nives, v. Lachm. ad h. l.); so according to Lucil. ap. Charis. p. 71 P.; App. ap. Prisc. p. 724 P.
Lewis & Short
A Latin Dictionary, 1879
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