Old Bailey

Etymology
Originally "The Bailey", a street running outside the western wall of medieval London; from the word, a Middle English term for the outermost wall or court of a fortification. The courthouse built nearby in the 16th century, alongside old, took its name from the street.

Proper noun

 * 1) A street in the City between  and St Paul's Cathedral.
 * 2) The  in this street; the Crown Court in the City of London.
 * 3)  The English legal system.