v.1. To pierce something in many places, especially with bullets or some other projectile: The troops riddled the side of the tank with gunfire.
2. To be permeated with some kind of puncture or hole. Used in the passive: The side of the house was riddled with bullet holes.
3. To be permeated in many places by something, especially by flaws. Used in the passive: That report was riddled with errors.