Green’s Dictionary of Slang

scour v.2

also scower, scowre
[SE scour, to move around hastily and energetically]

1. [late 16C–early 19C] (also scour away, scour it, scour off) to travel at speed, to run away.

2. [mid-17C–mid-18C] to roam about at night uproariously, breaking windows, beating the watch and molesting wayfarers.

3. [mid-17C–1940s] of a man, to have sexual intercourse; occas. of a woman.