Source : Webster's Revised Unabridged Dictionary (1913)

Coucal \Cou"cal\ (k??"k?l), n. [Prob. native name.] (Zo["o]l.)
   A large, Old World, ground cuckoo of the genus {Centropus},
   of several species.

Source : WordNet®

coucal
     n : Old World ground-living cuckoo having a long dagger-like
         hind claw