The Collaborative International Dictionary of English v.0.48:

Forest \For"est\, a.
   Of or pertaining to a forest; sylvan.
   [1913 Webster]

   Forest fly. (Zool.)
   (a) One of numerous species of blood-sucking flies, of the
       family Tabanid[ae], which attack both men and beasts.
       See Horse fly.
   (b) A fly of the genus Hippobosca, esp. H. equina. See
       Horse tick.

   Forest glade, a grassy space in a forest. --Thomson.

   Forest laws, laws for the protection of game, preservation
      of timber, etc., in forests.

   Forest tree, a tree of the forest, especially a timber
      tree, as distinguished from a fruit tree.
      [1913 Webster]