I.hoar-frost, rime (cf.: “glacies, gelu),” Cic. N. D. 2, 10, 26; Sen. Q. N. 4, 3 fin.; Plin. 2, 60, 61, § 152; Varr. R. R. 2, 2; Lucr. 2, 431 et saep.—In plur.: “pruinae ac nives,” Cic. Cat. 2, 10, 23; Hor. C. 1, 4, 4: “matutinae,” Ov. M. 3, 488; Val. Fl. 2, 287 al.—
II. Transf.
A. Snow (poet. and in post-class. prose): “nix concreta pruinā,” Lucr. 3, 20: “gelidae,” Verg. G. 2, 263; 3, 368; Val. Fl. 8, 210; Gell. 12, 5, 11.—
B. Ad medias sementem extende pruinas, winter, Verg. G. 1, 230.