Definition of unicorn moth
: a moth (Schizura unicornis) of the family Notodontidae whose caterpillar has a horn on its back
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 unicorn moth? Please tell us where you read or heard it (including the quote, if possible).