Wordnet 3.0
NOUN (1)
1.
a ridge of sand created by the wind;
found in deserts or near lakes and oceans;
[syn: dune, sand dune]
WordNet (r) 3.0 (2006):
sand dune
n 1: a ridge of sand created by the wind; found in deserts or
near lakes and oceans [syn: dune, sand dune]