The Collaborative International Dictionary of English v.0.48:

Tupelo \Tu"pe*lo\, n. [Tupelo, or tupebo, the native American
   Indian name.] (Bot.)
   A North American tree (Nyssa multiflora) of the Dogwood
   family, having brilliant, glossy foliage and acid red
   berries. The wood is crossgrained and very difficult to
   split. Called also black gum, sour gum, and pepperidge.
   [1913 Webster]

   Largo tupelo, or Tupelo gum (Bot.), an American tree
      (Nyssa uniflora) with softer wood than the tupelo.

   Sour tupelo (Bot.), the Ogeechee lime.
      [1913 Webster]