| valve | | |
| n. (body) | 1. valve | a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it. |
| ~ anatomical structure, bodily structure, body structure, complex body part, structure | a particular complex anatomical part of a living thing.; "he has good bone structure" |
| ~ ticker, heart, pump | the hollow muscular organ located behind the sternum and between the lungs; its rhythmic contractions move the blood through the body.; "he stood still, his heart thumping wildly" |
| ~ cardiac valve, heart valve | a valve to control one-way flow of blood. |
| ~ valvelet, valvula, valvule | a small valve. |
| ~ ileocecal valve | valve between the ileum of the small intestine and the cecum of the large intestine; prevents material from flowing back from the large to the small intestine. |
| n. (artifact) | 2. valve | device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone. |
| ~ brass instrument, brass | a wind instrument that consists of a brass tube (usually of variable length) that is blown by means of a cup-shaped or funnel-shaped mouthpiece. |
| ~ device | an instrumentality invented for a particular purpose.; "the device is small enough to wear on your wrist"; "a device intended to conserve water" |
| n. (artifact) | 3. valve | control consisting of a mechanical device for controlling the flow of a fluid. |
| ~ throttle, throttle valve, accelerator | a valve that regulates the supply of fuel to the engine. |
| ~ ball valve | any valve that checks flow by the seating of a ball. |
| ~ butterfly valve | a valve in a carburetor that consists of a disc that turns and acts as a throttle. |
| ~ choke | a valve that controls the flow of air into the carburetor of a gasoline engine. |
| ~ clack valve, clapper valve, clack | a simple valve with a hinge on one side; allows fluid to flow in only one direction. |
| ~ controller, control | a mechanism that controls the operation of a machine.; "the speed controller on his turntable was not working properly"; "I turned the controls over to her" |
| ~ exhaust valve | a valve through which burned gases from a cylinder escape into the exhaust manifold. |
| ~ handwheel | control consisting of a wheel whose rim serves as the handle by which a part is operated. |
| ~ handwheel | a wheel worked by hand. |
| ~ intake valve | a valve that controls the flow of fluid through an intake. |
| ~ poppet, poppet valve | a mushroom-shaped valve that rises perpendicularly from its seat; commonly used in internal-combustion engines. |
| ~ escape cock, escape valve, relief valve, safety valve, escape | a valve in a container in which pressure can build up (as a steam boiler); it opens automatically when the pressure reaches a dangerous level. |
| ~ slide valve | valve that opens and closes a passageway by sliding over a port. |
| n. (animal) | 4. valve | the entire one-piece shell of a snail and certain other molluscs. |
| ~ shell | the hard largely calcareous covering of a mollusc or a brachiopod. |
| n. (animal) | 5. valve | one of the paired hinged shells of certain molluscs and of brachiopods. |
| ~ shell | the hard largely calcareous covering of a mollusc or a brachiopod. |
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