seif dune

British

/ seɪf /

noun

(in deserts, esp the Sahara) a long ridge of blown sand, often several miles long

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seif dune Scientific

/ sāf,sīf /

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

Etymology

Origin of seif dune

seif, from Arabic: sword, from the shape of the dune

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023