The Collaborative International Dictionary of English v.0.48:

Wooden \Wood"en\, a.
   1. Made or consisting of wood; pertaining to, or resembling,
      wood; as, a wooden box; a wooden leg; a wooden wedding.
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   2. Clumsy; awkward; ungainly; stiff; spiritless.
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            When a bold man is out of countenance, he makes a
            very wooden figure on it.             --Collier.
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            His singing was, I confess, a little wooden. --G.
                                                  MacDonald.
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   Wooden spoon.
      (a) (Cambridge University, Eng.) The last junior optime
          who takes a university degree, -- denoting one who is
          only fit to stay at home and stir porridge. "We submit
          that a wooden spoon of our day would not be justified
          in calling Galileo and Napier blockheads because they
          never heard of the differential calculus." --Macaulay.
      (b) In some American colleges, the lowest appointee of the
          junior year; sometimes, one especially popular in his
          class, without reference to scholarship. Formerly, it
          was a custom for classmates to present to this person
          a wooden spoon with formal ceremonies.

   Wooden ware, a general name for buckets, bowls, and other
      articles of domestic use, made of wood.

   Wooden wedding. See under Wedding.
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WordNet (r) 3.0 (2006):

wooden
    adj 1: made or consisting of (entirely or in part) or employing
           wood; "a wooden box"; "an ancient cart with wooden
           wheels"
    2: lacking ease or grace; "the actor's performance was wooden";
       "a wooden smile"