Pronunciation: (ten'dur-loin"),[key] —n. 1. (in beef or pork) the tender meat of the muscle running through the sirloin and terminating before the ribs.
2. a cut of beef lying between the sirloin and ribs.
a. (formerly) a district in New York City noted for corruption and vice: so called because police there could eat well from their bribes.
b. a similar district in any U.S. city.