To search for something in a similar manner.
To rummage; to look for something in a somewhat aimless fashion.
To forage by poking the snout here and there.
To search exhaustively.
To shake someone so money falls from their pockets.
To cause something to fall down by shaking it, or something it is attached to.
To extort money from (someone) by means of threats.
To subject something to a shakedown test.