panther Meaning, Definition & Usage
- 
       noun a large spotted feline of tropical America similar to the leopard; in some classifications considered a member of the genus Felis
       
       
 jaguar; Felis onca; Panthera onca.
 
- 
       noun a leopard in the black color phase
        
      
 
- 
       noun large American feline resembling a lion
       
       
 puma; Felis concolor; catamount; cougar; painter; mountain lion.
 
WordNet
Pan"ther noun
Etymology
OE.Definitions
-  (Zoöl.) A large dark-colored variety of the leopard, by some zoölogists considered a distinct species. It is marked with large ringlike spots, the centers of which are darker than the color of the body. 
-  (Zoöl.) In America, the name is applied to the puma, or cougar, and sometimes to the jaguar.