noun

• The tenderest part of a loin of meat, especially of pork or beef.
• (dated, US slang) A district of a city where corruption is common, often because the district is devoted to questionable businesses (peep shows, etc) which are easy for police to blackmail and extort.
• (historical) A neighborhood of varying extent in midtown Manhattan, New York known for illicit entertainment and associated police corruption.
• A similar neighborhood in San Francisco, California.
• A similar neighborhood in Seattle, Washington.
• Other similar neighborhoods in other cities.