from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of several small, darkly colored butterflies of the family Riodinidae, occurring mainly in tropical regions and having iridescent lines or spots on the wings.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any butterfly of the family Riodinidae
metal + mark, from the metallic spots on the wing (Wiktionary)