Irruption

Part of speech: noun (n.)

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.

Synonyms: Invasion; incursion; inroad. See Invasion.