[doon, dyoon] 
| a sand hill or sand ridge formed by the wind, usually in desert regions or near lakes and oceans. |
| dune (dōōn, dyōōn) n. A hill or ridge of wind-blown sand. [French, from Old French, from Middle Dutch dūne; see dheuə- in Indo-European roots.] |
dune (d n) Pronunciation Key
(click for larger image in new window) A hill or ridge of wind-blown sand. Dunes are capable of moving by the motion of their individual grains but usually keep the same shape. See more at barchan dune, draa, longitudinal dune, seif dune, transverse dune. |
