To rove over, through, or about in a stealthy manner; especially, to search in, as for prey or booty.
It's tough to sneak vandalism into Wikipedia as there are plenty of other users prowling the Recent Changes page.
To idle; to go about aimlessly.
That dandy has nothing better to do than prowl around town all day in his pinstripe suit.
To collect by plunder.
to prowl money