Definition of bullfrog noun from the Oxford Advanced Learner's Dictionary

 

bullfrog

 noun
noun
BrE BrE//ˈbʊlfrɒɡ//
 
; NAmE NAmE//ˈbʊlfrɔːɡ//
 
, NAmE//ˈbʊlfrɑːɡ//
 
Amphibians and reptiles
 
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a large American frog with a loud croak See related entries: Amphibians and reptiles
See the Oxford Advanced American Dictionary entry: bullfrog