Source : Webster's Revised Unabridged Dictionary (1913)

Tusker \Tusk"er\, n. (Zo["o]l.)
   A large wild boar.

Tusker \Tusk"er\, n. (Zo["o]l.)
   An elephant having large tusks.

Source : WordNet®

tusker
     n : any mammal with prominent tusks (especially an elephant or
         wild boar)