DuckCorp Dico

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1.                 From The Collaborative International Dictionary of English v.0.48:
                   
   
   
                   
                     
   naid \na"id\, n. [See Naiad.] (Zool.)
      Any one of numerous species of small, fresh-water, chaetopod
      annelids of the tribe Naidina. They belong to the
      Oligochaeta.
      [1913 Webster]