Inroad
Inroad (in"rōd`) , noun
The entrance of an enemy into a country with purposes of hostility; a sudden or desultory incursion or invasion; raid; encroachment.
The loss of Shrewsbury exposed all North Wales to the daily inroads of the enemy.
With perpetual inroads to alarm,
Though inaccessible, his fatal throne.
Inroad (in*rōd") , transitive verb
To make an inroad into; to invade. [Obsolete]
The Saracens... conquered Spain, inroaded Aquitaine.