I.a running against, onset, assault, attack (class.).
I. In gen.: “atomorum,” Cic. N. D. 1, 41, 114: “atque impetus armatorum,” id. Caecin. 15, 44; Quint. 6, 4, 14 Spald. N. cr.—
II. In partic., a hostile inroad, incursion: “hostiliter in fines Romanos incursionem facit,” Liv. 1, 11, 1: “prohibere hostem ab incursionibus,” Caes. B. G. 6, 10 fin.: “subitas hostium incursiones sustinere,” Hirt. B. G. 8, 11 fin.: “moliri incursionem,” Plin. 6, 28, 32, § 146.