Ir*rup"tion (?), n. [L. irruptio: cf. F. irruption. See Irrupted.]
1.
A bursting in; a sudden, violent rushing into a place; as, irruptions of the sea.
Lest evil tidings, with too rude irruption
Hitting thy aged ear, should pierce too deep.
Milton.
2.
A sudden and violent inroad, or entrance of invaders; as, the irruptions of the Goths into Italy.
Addison.
Syn. -- Invasion; incursion; inroad. See Invasion.
© Webster 1913.