catflap.org Online Dictionary Query

  Pignut \Pig"nut\ (p[i^]g"n[u^]t), n. (Bot.)
     (a) See Groundnut
     (d) .
     (b) The bitter-flavored nut of a species of hickory ({Carya
         glabra syn. Carya porcina); also, the tree itself.
         [1913 Webster]

  Hickory \Hick"o*ry\, n. [North American Indian pawcohiccora
     (Capt. J. Smith) a kind of milk or oily liquor pressed from
     pounded hickory nuts. ``Pohickory'' is named in a list of
     Virginia trees, in 1653, and this was finally shortened to
     ``hickory.'' --J. H. Trumbull.] (Bot.)
     An American tree of the genus Carya, of which there are
     several species. The shagbark is the Carya alba, and has a
     very rough bark; it affords the hickory nut of the markets.
     The pignut, or brown hickory, is the Carya glabra. The
     swamp hickory is Carya amara, having a nut whose shell is
     very thin and the kernel bitter.
     [1913 Webster]
  
     Hickory shad. (Zo["o]l.)
     (a) The mattowacca, or fall herring.
     (b) The gizzard shad.
         [1913 Webster]

  Carya glabra
       n : an American hickory tree having bitter nuts [syn: pignut,
           pignut hickory, brown hickory, black hickory]