seif dune

/ (seɪf) /

noun

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

Word Origin for seif dune

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

Scientific definitions for seif dune

seif dune
[ 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.