1. A crowd of people, especially as potential victims of pickpockets. 2. A prison-break, especially one involving numerical rather than armed force. 3. The process by which aides crowd a prospective swindle victim close to a stand or game. 4. To sell, especially stolen or contraband goods. 5. To pass or issue, especially counterfeit currency or negotiables. 6. To burglarize.

- american underworld dictionary - 1950