birdbrain

from WordNet (r) 3.0 (2006)

birdbrain
    n 1: a person with confused ideas; incapable of serious thought
         [syn: {addle-head}, {addlehead}, {loon}, {birdbrain}]

from The Collaborative International Dictionary of English v.0.48

birdbrain \bird"brain`\ n.
   1. a person with confused ideas; incapable of serious
      thought.

   Syn: addle-head, loon.
        [WordNet 1.5] bird-cage
        Bird cage

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