bullfrog(redirected from Bull frog)
Also found in: Thesaurus, Encyclopedia.
Related to Bull frog: American Bullfrog
Any of several large, heavy-bodied frogs, especially Rana catesbeiana, native to eastern North America and introduced elsewhere, having a characteristic deep resonant croak.
(Animals) any of various large frogs, such as Rana catesbeiana (American bullfrog), having a loud deep croak
a large North American frog, Rana catesbeiana, having a deep voice.