The Collaborative International Dictionary of English v.0.48:

Palea \Pa"le*a\, n.; pl. Pale[ae] (-[=e]). [L., chaff.]
   [1913 Webster]
   1. (Bot.)
      (a) The interior chaff or husk of grasses.
      (b) One of the chaffy scales or bractlets growing on the
          receptacle of many compound flowers, as the Coreopsis,
          the sunflower, etc.
          [1913 Webster]

   2. (Zool.) A pendulous process of the skin on the throat of a
      bird, as in the turkey; a dewlap.
      [1913 Webster]