corusco
ἐπ' αὐτὸν ἥκεις τὸν βατῆρα τῆς θύρας → you've come to the crux of the matter, come to the point, hit the nail on the head, you've come to the very threshold of the door, you are come to the very threshold of the door, you've arrived at the truth of the matter
Latin > English (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.].
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.—
II Transf., to move quickly, to vibrate, shake, brandish, wave, tremble, etc. (poet.).
(a) 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.—
(b) Neutr., to flit, flutter, shake: apes pennis coruscant, Verg. G. 4, 73: abies, trembles, Juv. 3, 254.—
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.
Latin > French (Gaffiot 2016)
cŏruscō,¹² āvī, ātum, āre,
1 intr., cosser, heurter de la tête : Lucr. 2, 320