Definition of valve

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Valve (n.) A small portion of certain anthers, which opens like a trapdoor to allow the pollen to escape, as in the barberry..

Lern More About Valve

Typhlosole :: Typhlosole (n.) A fold of the wall which projects into the cavity of the intestine in bivalve mollusks, certain annelids, starfishes, and some other animals..
Dreissena :: Dreissena (n.) A genus of bivalve shells of which one species (D. polymorpha) is often so abundant as to be very troublesome in the fresh waters of Europe.
Pump :: Pump (n.) An hydraulic machine, variously constructed, for raising or transferring fluids, consisting essentially of a moving piece or piston working in a hollow cylinder or other cavity, with valves properly placed for admitting or retaining the fluid as it is drawn or driven through them by the action of the piston..
Dashpot :: Dashpot (n.) A pneumatic or hydraulic cushion for a falling weight, as in the valve gear of a steam engine, to prevent shock..
Nates :: Nates (n. pl.) The umbones of a bivalve shell.
Byssus :: Byssus (n.) A tuft of long, tough filaments which are formed in a groove of the foot, and issue from between the valves of certain bivalve mollusks, as the Pinna and Mytilus, by which they attach themselves to rocks, etc..
Bellerophon :: Bellerophon (n.) A genus of fossil univalve shells, believed to belong to the Heteropoda, peculiar to the Paleozoic age..
Buccinum :: Buccinum (n.) A genus of large univalve mollusks abundant in the arctic seas. It includes the common whelk (B. undatum).
Stopcock :: Stopcock (n.) A bib, faucet, or short pipe, fitted with a turning stopper or plug for permitting or restraining the flow of a liquid or gas; a cock or valve for checking or regulating the flow of water, gas, etc., through or from a pipe, etc..
Ganoidei :: Ganoidei (n. pl.) One of the subclasses of fishes. They have an arterial cone and bulb, spiral intestinal valve, and the optic nerves united by a chiasma. Many of the species are covered with bony plates, or with ganoid scales; others have cycloid scales..
Wing-shell :: Wing-shell (n.) Any one of various species of marine bivalve shells belonging to the genus Avicula, in which the hinge border projects like a wing..
Trumpet :: Trumpet (n.) A wind instrument of great antiquity, much used in war and military exercises, and of great value in the orchestra. In consists of a long metallic tube, curved (once or twice) into a convenient shape, and ending in a bell. Its scale in the lower octaves is limited to the first natural harmonics; but there are modern trumpets capable, by means of valves or pistons, of producing every tone within their compass, although at the expense of the true ringing quality of tone..
Pholas :: Pholas (n.) Any one of numerous species of marine bivalve mollusks of the genus Pholas, or family Pholadidae. They bore holes for themselves in clay, peat, and soft rocks..
Quinquevalve :: Quinquevalve (a.) Alt. of Quinquevalvula.
Intravalvular :: Intravalvular (a.) Between valves.
Bubble Shell :: Bubble shell () A marine univalve shell of the genus Bulla and allied genera, belonging to the Tectibranchiata..
Cock :: Cock (n.) A faucet or valve.
Cornet-a-piston :: Cornet-a-piston (n.) A brass wind instrument, like the trumpet, furnished with valves moved by small pistons or sliding rods; a cornopean; a cornet..
Bivalve :: Bivalve (a.) Having two shells or valves which open and shut, as the oyster and certain seed vessels..
Shipworm :: Shipworm (n.) Any long, slender, worm-shaped bivalve mollusk of Teredo and allied genera. The shipworms burrow in wood, and are destructive to wooden ships, piles of wharves, etc. See Teredo..
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