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Adjective: voluminous  vu'loo-mu-nus
  1. Large in volume or bulk
    "a voluminous skirt"
  2. Marked by repeated turns and bends
    "a voluminous road up the mountain";
    - tortuous, twisting, twisty, winding, windy[2]
  3. Large in number or quantity (especially of discourse)
    "a subject of voluminous legislation";
    - copious

See also: abundant, big, crooked, large