Meaning of seif in English:

seif

(also seif dune)

Pronunciation /siːf/ /seɪf/

noun

  • A sand dune in the form of a long, narrow ridge.

    • ‘Linear or seif dunes occur in areas of more variable winds and show less lateral movement; star-shaped dunes develop in areas of very variable winds and show little lateral movement and considerable vertical accretion.’

Origin

Early 20th century from Arabic sayf ‘sword’ (because of the shape).