'Polder' definitions:

Definition of 'polder'

(from WordNet)
noun
Low-lying land that has been reclaimed and is protected by dikes (especially in the Netherlands)

Definition of 'Polder'

From: GCIDE
  • Polder \Pol"der\, n. [D.] A tract of low land reclaimed from the sea by of high embankments. [Holland & Belgium] [1913 Webster]