An example of an emperor moth.Licensed from iStockPhoto
nounThe American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Any of several moths of the family Saturnidae, especially Saturnia pavonia of Eurasia, having distinctively patterned wings.