Filbert

filbert
    n 1: small nut-bearing tree much grown in Europe [syn: {cobnut},
         {filbert}, {Corylus avellana}, {Corylus avellana grandis}]
    2: nut of any of several trees of the genus Corylus [syn:
       {hazelnut}, {filbert}, {cobnut}, {cob}]
    

filbert \fil"bert\, n. [Perh. fr. fill + bread, as filling the
   bread or husk; cf. G. bartnuss (lit., bread nut) filbert; or
   perh. named from a St.Philibert, whose day, Aug. 22, fell in
   the nutting season.]
   1. (Bot.) The fruit of the {Corylus Avellana} or {Corylus
      maxima}, also called the hazel; the hazelnut. It is an
      oval nut, containing a kernel that has a mild,
      farinaceous, oily taste, agreeable to the palate.
      [1913 Webster]

   Note: In England filberts are usually large hazelnuts,
         especially the nuts from selected and cultivated trees.
         The American hazelnuts are of two other species,
         {Corylus Americana} and {Corylus cornuta}, and are also
         sometimes called filberts.
         [1913 Webster +PJC]

   2. (Bot.) The tree bearing the filbert; the hazelnut tree.
      [PJC]

   {Filbert gall} (Zool.), a gall resembling a filbert in form,
      growing in clusters on grapevines. It is produced by the
      larva of a gallfly ({Cecidomyia}).
      [1913 Webster]