Definition of cotton rat
: any of a genus (Sigmodon) of small-eared, omnivorous rats that are found chiefly in grassy habitats from the U.S. and Mexico to Brazil, are sometimes destructive to crops (such as cotton, alfalfa, and corn), and have S-shaped molars — see hispid cotton rat
Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
First Known Use of cotton rat
Seen and Heard
What made you want to look up cotton rat? Please tell us where you read or heard it (including the quote, if possible).