Source : Webster's Revised Unabridged Dictionary (1913)

Oaken \Oak"en\, a. [AS. [=a]cen.]
   Made or consisting of oaks or of the wood of oaks. ``In oaken
   bower.'' --Milton.

         Oaken timber, wherewith to build ships.  --Bacon.

Source : WordNet®

oaken
     adj : consisting of or made of wood of the oak tree; "a solid oak
           table"; "the old oaken bucket"