Source : Webster's Revised Unabridged Dictionary (1913)

Gayal \Gay"al\, n. [Native name.] (Zo["o]l.)
   A Southern Asiatic species of wild cattle ({Bibos
   frontalis}).

Source : WordNet®

Bibos frontalis
     n : ox of southeast Asia sometimes considered a domesticated
         breed of the gaur [syn: {gayal}, {mithan}]