Wordnet 3.0
ADJECTIVE (1)
1. 
 consisting of or made of wood of the oak tree; 
- Example: "a solid oak table"- Example: "the old oaken bucket"
The Collaborative International Dictionary of English v.0.48:
Oaken \Oak"en\, a. [AS. [=a]cen.]
   Made or consisting of oaks or of the wood of oaks. "In oaken
   bower." --Milton.
   [1913 Webster]
         Oaken timber, wherewith to build ships.  --Bacon.
   [1913 Webster]
WordNet (r) 3.0 (2006):
oaken
    adj 1: consisting of or made of wood of the oak tree; "a solid
           oak table"; "the old oaken bucket"