NOUN (2)

1. freshwater port and largest city in Oregon; located in northwestern Oregon on the Willamette River which divides the city into east and west sections; renowned for its beautiful natural setting among the mountains;

2. largest city in Maine in the southwestern corner of the state;

WordNet (r) 3.0 (2006):

Portland
    n 1: freshwater port and largest city in Oregon; located in
         northwestern Oregon on the Willamette River which divides
         the city into east and west sections; renowned for its
         beautiful natural setting among the mountains
    2: largest city in Maine in the southwestern corner of the state