A cluster of fire ants.Licensed from iStockPhoto
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
any of a genus (Solenopsis) of ants whose sting causes a burning sensation, esp. a South American species (S. invicta) that has become a severe pest in the S U.S.
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.
Any of several ants of the genus Solenopsis, especially S. geminata or S. saevissima of the southern United States and tropical America, that build large mounds and can inflict a painful sting.