Rodent (noun)

1. A mammal of the order Rodentia, characterized by upper and lower incisors that grow continuously and must be gnawed to wear down.
2. An animal that belongs to the rodent family, for example, a mouse, rat, squirrel, or beaver.

Origin:

Rodent is derived from the latin word "rodere" meaning "to gna.w"

Examples:

1. He set a trap to catch the rodent in his house.
2. The rodent chewed through the wires in the car.
3. Squirrels are a common type of rodent in the city.
4. The rodent population has grown out of control.
5. The rodent's teeth never stop growing, so they must gnaw on things to wear them down.