adjective
Definition: Relating to a group of small mammals that have sharp front teeth for gnawing, such as mice, rats, and squirrels.
Example: The scientist studied the rodent behavior in the wild.
noun
Definition: A type of small mammal that has large front teeth for gnawing, including animals like mice, rats, and squirrels.
Example: The park is home to many different species of rodent, including squirrels and rabbits.