Any of numerous social or solitary insects, chiefly of the superfamilies Vespoidea and Sphecoidea, having a slender body with a constricted abdomen, two pairs of membranous wings, mouths adapted for biting or sucking, and in the females an ovipositor often modified as a sting.
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.