Definition of seif in English:


Line breaks: seif
Pronunciation: /siːf
, seɪf
(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).

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Word of the day coloratura
Pronunciation: ˌkɒlərəˈtjʊərə
elaborate ornamentation of a vocal melody