Lewis & Short

cŏrusco, āre, v. a. and n. (the access. form conisco is found in some copies of Lucr. 2, 320, and Cic. Fragm. ap. Quint. 8, 3, 21) [root scar-, to leap; Gr. σκαίρω; cf. also κορύσσω; v. Lidd. and Scott, s. v.].

  1. I. To thrust or push with the horns (very rare): agni ludunt blandeque coruscant, Lucr. 2, 320: frontem, Juv. 12, 6: caput opponis cum eo coruscans, Cic. Fragm. ap. Quint. 8, 3, 21.
  2. II. Transf., to move quickly, to vibrate, shake, brandish, wave, tremble, etc. (poet.).
          1. (α) Act.: duo Gaesa manu, Verg. A. 8, 661: hastam, id. ib. 12, 431: telum, id. ib. 12, 887; Sil. 1, 434: ferrum, Val. Fl. 2, 228 al.: linguas (colubrae), Ov. M. 4, 494: alternos apices (flammae), Stat. Th. 12, 432.
          2. (β) Neutr., to flit, flutter, shake: apes pennis coruscant, Verg. G. 4, 73: abies, trembles, Juv. 3, 254.
    1. B. In partic., of the tremulous motion of fire, lightning, or brilliant bodies, to flash, glitter, gleam, coruscate: flamma inter nubes coruscat, Pac. ap. Cic. de Or. 3, 39, 157: elucent aliae (apes) et fulgore coruscant, Verg. G. 4, 98: Juppiter arce, Val. Fl. 5, 304: telisque salum facibusque coruscat, id. 1, 703: coruscans clipeus, Claud. III. Cons. Hon. 29 al.