Venus

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

• noun Roman Mythology The goddess of love and beauty.
• noun The second planet from the sun, having an average radius of 6,052 kilometers (3,761 miles), a mass 0.82 times that of Earth, and a sidereal period of revolution about the sun of 224.7 days at a mean distance of approximately 108.2 million kilometers (67.2 million miles).

from The Century Dictionary.

• noun In Roman mythology, the goddess of beauty and love, more especially sensual love.
• noun The most brilliant of the planets, being frequently visible to the naked eye by daylight.
• noun Sexual intercourse; venery.
• noun In old chemistry, copper.
• noun In heraldry, green: the name given to that color when blazoning is done by means of the planets. See blazon, n., 2.
• noun In conchology: The typical genus of bivalve shells of the family Veneridæ: so called by Linnæus with allusion to the shape of the lunule of the closed valves. See cuts under Veneridæ, quahog, and dimyarian.
• noun [lowercase] A shell of the genus Venus; any venerid.
• noun Venus's-comb; a murex.
• noun Venus's-slipper. A heteropod, the glass-nautilus. See cut under Carinaria. A pteropod of the family Cymbulidæ. See cut under Cymbulum.

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

• noun (Class. Myth.) The goddess of beauty and love, that is, beauty or love deified.
• noun (Anat.) One of the planets, the second in order from the sun, its orbit lying between that of Mercury and that of the Earth, at a mean distance from the sun of about 67,000,000 miles. Its diameter is 7,700 miles, and its sidereal period 224.7 days. As the morning star, it was called by the ancients Lucifer; as the evening star, Hesperus.
• noun (Alchem.), Archaic The metal copper; -- probably so designated from the ancient use of the metal in making mirrors, a mirror being still the astronomical symbol of the planet Venus.
• noun (Zoöl.) Any one of numerous species of marine bivalve shells of the genus Venus or family Veneridæ. Many of these shells are large, and ornamented with beautiful frills; others are smooth, glossy, and handsomely colored. Some of the larger species, as the round clam, or quahog, are valued for food.
• noun (Bot.) the wild teasel; -- so called because the connate leaf bases form a kind of receptacle for water, which was formerly gathered for use in the toilet. Also called Venus's bath.
• noun (Zoöl.) an elegant, cornucopia-shaped, hexactinellid sponge (Euplectella speciosa) native of the East Indies. It consists of glassy, transparent, siliceous fibers interwoven and soldered together so as to form a firm network, and has long, slender, divergent anchoring fibers at the base by means of which it stands erect in the soft mud at the bottom of the sea. Called also Venus's flower basket, and Venus's purse.
• noun (Bot.), (Zoöl.) A species of Murex (Murex tenuispinus). It has a long, tubular canal, with a row of long, slender spines along both of its borders, and rows of similar spines covering the body of the shell. Called also Venus's shell.
• noun (Zoöl.) a common reticulated, fanshaped gorgonia (Gorgonia flabellum) native of Florida and the West Indies. When fresh the color is purple or yellow, or a mixture of the two.
• noun (Bot.) See Flytrap, 2.
• noun (Zoöl.) a long, flat, ribbonlike, very delicate, transparent and iridescent ctenophore (Cestum Veneris) which swims in the open sea. Its form is due to the enormous development of two spheromeres. See Illust. in Appendix.
• noun (Bot.) a delicate and graceful fern (Adiantum Capillus-Veneris) having a slender, black and shining stem and branches.
• noun (Min.) quartz penetrated by acicular crystals of rutile.
• noun (Bot.) an annual plant of the genus Specularia allied to the bellflower; -- also called lady's looking-glass.
• noun (Bot.) any one of several species of Omphalodes, low boraginaceous herbs with small blue or white flowers.
• noun (Bot.) an old name for Quaker ladies. See under Quaker.
• noun (Zoöl.) Same as Venus's basket, above.
• noun (Zoöl.) Same as Venus, 4.
• noun (Bot.) Any plant of the genus Cypripedium. See Lady's slipper. (b) (Zoöl.) Any heteropod shell of the genus Carinaria. See Carinaria.

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

• proper noun Roman mythology the goddess of love, beauty, and natural productivity
• proper noun The second planet in our solar system, named for the goddess; represented in astronomy and astrology by ♀.
• proper noun obsolete Sexual activity or intercourse; sex, lust, venery.
• proper noun A taxonomic genus within the family Veneridae — the true venus clams.

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

• noun type genus of the family Veneridae: genus of edible clams with thick oval shells
• noun goddess of love; counterpart of Greek Aphrodite
• noun the second nearest planet to the sun; it is peculiar in that its rotation is slow and retrograde (in the opposite sense of the Earth and all other planets except Uranus); it is visible from Earth as an early `morning star' or an `evening star'