Lewis & Short

2. incursus, ūs, m. [incurro], a running against, an assault, attack (class.).

  1. I. Lit.: ceterorum tela atque incursus refugit, Cic. Caecin. 8, 22: equitum incursus sustinere, Caes. B. C. 1, 71; Hirt. B. G. 8, 18, 4: primo statim incursu, at the first onset, Liv. 2, 25, 4.
    1. B. Transf., of inanim. things, a rushing or dashing against (mostly poet.): undarum, Ov. M. 11, 497; cf. aquarum, id. ib. 11, 731: pluviarum, Col. 4, 17: tempestatum, Quint. 10, 7, 3: sanguinis, Luc. 7, 700: solis, of the sunbeams, Col. 1, 6, 22.
  2. II. Trop., an impulse, effort: incursus animus varios habet, has or entertains different impulses, plans, Ov. M. 9, 152.