Definition of Peacock Alley in English:

Peacock Alley

Pronunciation /ˌpiːkɒk ˈali/

noun

US
  • The main corridor of the Waldorf-Astoria Hotel in New York. Also occasionally: the main corridor or promenade in any similar hotel.

    Also used allusively.

Origin

Early 20th century. From peacock + alley, so called because fashionable people promenaded there.