rodent
US /ˈroʊ.dənt/
UK /ˈroʊ.dənt/
1.
a gnawing mammal of an order that includes rats, mice, squirrels, hamsters, and guinea pigs, characterized by continuously growing incisors that must be kept short by gnawing.
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The house was infested with rodents, so they called an exterminator.
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Mice and rats are common types of rodents.