Definition of "sand dune" []

• A large, semi-permanent mound of windblown sand, held together by specialized plants, common along seashores and in deserts. (noun)

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• "The Rikers described the new addition to their beach house on the sand dune near Mooseville."
• "When he passed a boulder marked THE PINES, he knew he would soon reach the sand dune and the end of the trail."
• "When he said as much to Rogan the techneer leaned back against a convenient sand dune to combine rest and explanation."