ant

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

• noun Any of numerous hymenopteran insects of the family Formicidae, characteristically having wings only in the males and fertile females and living in colonies that have a complex social organization.
• idiom (ants in (one's) pants) A state of restless impatience.

from The Century Dictionary.

• An old form of and.
• noun An emmet; a hymenopterous insect of the family Formicidœ and the Linnean genus Formica, now divided into several genera.
• noun The form of anti- before vowels in words taken from or formed according to the Greek, as in antagonist. In words formed in English, anti- usually remains unchanged before a vowel, as in anti-episcopal, etc.
• noun A former spelling of aunt.
• noun A suffix of adjectives, and of nouns originally adjectives, primarily (in the original Latin) a present participle suffix, cognate with the original form (AS. -ende) of English -ing, as in dominant, ruling, regnant, reigning, radiant, beaming, etc. See -ent.
• noun A corruption of -an, of various origin, as in pageant, peasant, pheasant, truant, tyrant. See these words.

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

• noun (Zoöl.) A hymenopterous insect of the Linnæan genus Formica, which is now made a family of several genera; an emmet; a pismire.
• noun (Zoöl.) one of a very extensive group of South American birds (Formicariidæ), which live on ants. The family includes many species, some of which are called ant shrikes, ant thrushes, and ant wrens.
• noun (Bot.) a species of grass (Aristida oligantha) cultivated by the agricultural ants of Texas for the sake of its seed.

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

• noun Any of various insects in the family Formicidae in the order Hymenoptera, typically living in large colonies composed almost entirely of flightless females
• noun Internet A Web spider
• verb ornithology To rub insects, especially ants, on one's body, perhaps to control parasites or clean feathers.

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

• noun social insect living in organized colonies; characteristically the males and fertile queen have wings during breeding season; wingless sterile females are the workers