tenderloin

/T EH1 N D ER0 L OY0 N/
noun
  1. 1

    The tenderest part of a loin of meat, especially of pork or beef.

  2. 2

    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.

Source: https://en.wiktionary.org/wiki/tenderloin