Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
a large North American assassin bug (Arilus cristatus) distinguished by a high, saw-toothed crest on the prothorax: it sucks the blood of other insects
Used by arrangement with John Wiley & Sons, Inc.
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.
A large assassin bug (Arilus cristatus) of North America that has a notched, wheellike projection on the back of the thorax and preys on other insects.