wasp

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Any of numerous social or solitary hymenopterans of the suborder Apocrita, especially of the family Vespidae, that characteristically have a slender hairless body with a constricted abdomen, two pairs of membranous wings, a mouth adapted for biting or sucking, and in the females an ovipositor sometimes modified as a sting.

from The Century Dictionary.

• noun Any one of several families, many genera, and very numerous species of aculeate hymenopterous insects, whose wings fold lengthwise in a peculiar manner when the insects rest, which insects are hence collectively called Diploptera.
• noun Figuratively, a person characterized by ill nature, petulance, peevishness, irritability, or petty malignity.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Zoöl.) Any one of numerous species of stinging hymenopterous insects, esp. any of the numerous species of the genus Vespa, which includes the true, or social, wasps, some of which are called yellow jackets.
• noun any one of numerous species of solitary wasps that make their nests in burrows which they dig in the ground, as the sand wasps. See Sand wasp, under Sand.
• noun See under Mud.
• noun See under Potter.
• noun a species of fly resembling a wasp, but without a sting.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Any of many types of stinging flying insect resembling a hornet or bee.
• noun A person who behaves in an angry or insolent way, hence waspish.
• noun A member of the dominant American upper-class culture, a white Anglo-Saxon Protestant.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun social or solitary hymenopterans typically having a slender body with the abdomen attached by a narrow stalk and having a formidable sting
• noun a white person of Anglo-Saxon ancestry who belongs to a Protestant denomination