(also seif dune)
A sand dune in the form of a long, narrow ridge.
More example sentences
- 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.
early 20th century: from Arabic sayf 'sword' (because of the shape).
Definition of seif in:
- The US English dictionary