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from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A sharp-crested longitudinal sand dune common to the Sahara and ranging up to 300 m (984 ft) in height and 300 km (186 mi) in length.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a long and tall sand dune with a sharp crest; common in the Sahara


Arabic sayf, sword, from Aramaic saypā, of Egyptian origin; akin to Coptic sēfe, sword.
(American Heritage® Dictionary of the English Language, Fourth Edition)


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