MARYLEBONE, rĭ-lē̇-bōn′, commonly mā′rĭl-bō̇n or măr′-ĭ-bŭn. A metropolitan and Parliamentary borough of London, in the northwestern part of the city. It is regularly laid out, with many handsome streets, and here are situated Regent's Park, the gardens of the Zoölogical and Botanic societies, the Colosseum, Middlesex and other hospitals, University College, and the terminal stations of the Midland, Great Western, and Great Northern railroads. Population, in 1891, 144,083; in 1901, 133,329.