invade

v. (-ding) (often absol.) 1 enter (a country etc.) Under arms to control or subdue it. 2 swarm into. 3 (of a disease) attack. 4 encroach upon (a person's rights, esp. Privacy).  invader n. [latin vado vas- go]

v. t. To go into or upon; to pass within the confines of; to enter; -- used of forcible or rude ingress.