panther in WordNet English dictionary

1. large American feline resembling a lion
   cougar  puma  catamount  mountain lion  painter  panther  Felis concolor 
   
2. a large spotted feline of tropical America similar to the leopard; in some classifications considered a member of the genus Felis
   jaguar  panther  Panthera onca  Felis onca 
   
3. a leopard in the black color phase
   panther