Source : Webster's Revised Unabridged Dictionary (1913)

Jackdaw \Jack"daw`\, n. [Prob. 2d jack + daw, n.] (Zo["o]l.)
   See {Daw}, n.

Source : WordNet®

jackdaw
     n : common black-and-gray Eurasian bird noted for thievery [syn:
          {daw}, {Corvus monedula}]