Sieve n.
  1. A utensil for separating the finer and coarser parts of a pulverized or granulated substance from each other. It consist of a vessel, usually shallow, with the bottom perforated, or made of hair, wire, or the like, woven in meshes. “In a sieve thrown and sifted.”
  2. A kind of coarse basket.
  Sieve cells Bot., cribriform cells. See under Cribriform.
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