The Collaborative International Dictionary of English v.0.48:

Cornel \Cor"nel\ (-n?l), n. [OF. cornille, cornoille, F.
   cornouille, cornel berry, LL. cornolium cornel tree, fr. L.
   cornus, fr. cornu horn, in allusion to the hardness of the
   wood. See Horn.]
   1. (Bot.) The cornelian cherry (Cornus Mas), a European
      shrub with clusters of small, greenish flowers, followed
      by very acid but edible drupes resembling cherries.
      [1913 Webster]

   2. Any species of the genus Cornus, as Cornus florida,
      the flowering cornel; Cornus stolonifera, the osier
      cornel; Cornus Canadensis, the dwarf cornel, or
      bunchberry.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Cornic \Cor"nic\ (k[^o]r"n[i^]k), a.
   Pertaining to, derived from, or resembling, the dogwood
   (Cornus florida).
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Cornin \Cor"nin\ (k?r"n?n), n. (Chem.)
   (a) A bitter principle obtained from dogwood (Cornus
       florida), as a white crystalline substance; -- called
       also cornic acid.
   (b) An extract from dogwood used as a febrifuge.
       [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Dogwood \Dog"wood`\ (-w[oo^]d`), n. [So named from skewers
   (dags) being made of it. --Dr. Prior. See Dag, and
   Dagger.] (Bot.)
   The Cornus, a genus of large shrubs or small trees, the
   wood of which is exceedingly hard, and serviceable for many
   purposes.
   [1913 Webster]

   Note: There are several species, one of which, Cornus
         mascula, called also cornelian cherry, bears a red
         acid berry. Cornus florida is the flowering dogwood,
         a small American tree with very showy blossoms.
         [1913 Webster]

   Dogwood tree.
   (a) The dogwood or Cornus.
   (b) A papilionaceous tree (Piscidia erythrina) growing in
       Jamaica. It has narcotic properties; -- called also
       Jamaica dogwood.
       [1913 Webster]

WordNet (r) 3.0 (2006):

Cornus florida
    n 1: deciduous tree; celebrated for its large white or pink
         bracts and stunning autumn color that is followed by red
         berries [syn: common white dogwood, eastern flowering
         dogwood, Cornus florida]