polder

/ˈpoʊldər/
noun
  1. A low-lying area of land that has been reclaimed from a body of water, such as a sea or lake, and is protected by dikes.
    • Farmers grow tulips and vegetables on the fertile soil of the polder.
    • The village was built on a polder, surrounded by canals and dikes.
    • The Netherlands is famous for its polders, which were created by draining lakes and marshes.