Definition of rodent:
gnawer, gnawing animal.
- "Round the Red Lamp Being Facts and Fancies of Medical Life", Arthur Conan Doyle.
- "Brown John's Body", Winston Marks.
So she thought to herself as she went about her work, the rodent which we children call the " Sorrow Rat" gnawing all day at her heart, the noise of the class- rooms, ordinarily so deafening, dull and distant in her ear.- "Sweethearts at Home", S. R. Crockett.