Webster's Revised Unabridged Dictionary · 1913

Incursion

Incursion , noun

[Latin incursio: compare French incursion. See Incur.]

1.
A running into; hence, an entering into a territory with hostile intention; a temporary invasion; a predatory or harassing inroad; a raid.
The Scythian, whose incursions wild Have wasted Sogdiana. — Milton
The incursions of the Goths disordered the affairs of the Roman Empire. — Arbuthnot
2.
Attack; occurrence. [Obsolete]
Sins of daily incursion. — South