Definition of spiny rat
1 : any of various South or Central American rats of Echimys and closely related genera having more or less bristly fur —called also hedgehog rat, porcupine rat
2 : spiny mouse 2
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!
Seen and Heard
What made you want to look up spiny rat? Please tell us where you read or heard it (including the quote, if possible).