mooch (person)

1. A person with no sales resistance; an easy victim for peddlers of watered stocks and other commodities of dubious value. 2. The victim of a swindle. 3. Habit-forming narcotics. 4. A drug addict. 5. A begger or petty thief; a chisler; the panhandling profession; the act of panhandling. 6. An idler or passerby; a pedestrian; the act of walking around aimlessly; jay walking; the art of walking away from the scene of a crime with studied casualness. 7. The act of stealing petty things in passing.

- american underworld dictionary - 1950