Source : Webster's Revised Unabridged Dictionary (1913)

Staghound \Stag"hound`\, n. (Zo["o]l.)
   A large and powerful hound formerly used in hunting the stag,
   the wolf, and other large animals. The breed is nearly
   extinct.

Source : WordNet®

staghound
     n : a large heavy hound formerly used in hunting stags and other
         large game; similar to but larger than a foxhound