Definition of owl butterfly
: a large South American butterfly of the genus Caligo; especially : a butterfly (C. eurylochus) that has a large ocellated spot like an owl's eye on each hind wing
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 owl butterfly? Please tell us where you read or heard it (including the quote, if possible).