Ir-rŭp'tion, n.
n. [Lat. irruptio, Fr. irruption, Sp. irrupcion, It. irruzione. See supra.]
Sense 1. A bursting in; a breaking, or sudden, violent rushing into a place; as, the irruptions of the sea.
Lest evil tidings, with too rude irruption Hitting thy aged ear, should pierce too deep. Milton.
Sense 2. A sudden invasion or incursion; a sudden, violent inroad or entrance of invaders into a place or country; as, the irruption of the northern nations into France and Italy.
Synonyms—Invasion; incursion; inroad. See INVASION.