seif

名词 n.
中文释义

英文释义

名词 n.
  1. A sand dune that elongates parallel to the prevailing wind.
    — Such seifs have a somewhat zig-zag form instead of a fairly straight line. On the top of seifs small transverse dunelets are very often found, and these may be likened to almost straightened-out barchans.[…]On the top of the seif they form a wave-like pattern with a fairly defined "wavelength".

词形变化

seifs plural saif alternative

词源

From Arabic سَيْف (sayf, “sword”). Doublet of xiphos.
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