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

 

rodent

 noun
noun
BrE BrE//ˈrəʊdnt//
 
; NAmE NAmE//ˈroʊdnt//
 
Wild mammals
 
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any small animal that belongs to a group of animals with strong sharp front teeth. Mice, rats and squirrels are all rodents. See related entries: Wild mammals Word Origin mid 19th cent.: from Latin rodent- ‘gnawing’, from the verb rodere.
See the Oxford Advanced American Dictionary entry: rodent