ai·grette /eˈgrɛt, ˈeˌ/
  鷺;冠毛;鷺鷥毛帽飾;飾毛
  Ai·gret Ai·grette n.
  1. Zool. The small white European heron. See Egret.
  2. A plume or tuft for the head composed of feathers, or of gems, etc.
  3. A tuft like that of the egret. Bot. A feathery crown of seed; egret; as, the aigrette or down of the dandelion or the thistle.
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  aigrette
       n : a long plume (especially one of egret feathers) worn on a
           hat or a piece of jewelry in the shape of a plume [syn: aigret]