Lewis & Short

cŏruscus, a, um, adj. [corusco, II.] (poet.).

  1. I. In waving motion, waving, vibrating, tremulous: silvae, Verg. A. 1, 164: ilices, id. ib. 12, 701.
    Humorously: omnia corusca prae tremore fabulor, i. e. trembling, Plaut. Rud. 2, 6, 42.
  2. II. Flashing, gleaming, glittering: fulgura, Lucr. 5, 296.
    So of lightning: ignis, Lucr. 6, 203; Hor. C. 1, 34, 6: lumina, Lucr. 6, 283.
    Also: vis fulminis, Poët. ap. Cic. Tusc. 2, 9, 21: sol, Verg. G. 1, 234; cf.: radii (solis), Ov. M. 1, 768: lampades, id. ib. 12, 247: viri ferro auroque, Stat. Th. 4, 9; cf. in Greek constr.: cristis capita alta corusci, Verg. A. 9, 678.
    1. B. Transf., brilliant, ἐνθύμημα, Gell. 17, 20, 4.
      Subst.: cŏruscum, i, n., lightning, Venant. 3, 4.