3 entries found for valve.
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Main Entry: valve
Pronunciation: valv
Function: noun 1: a bodily structure (as in a vein or the heart) that closes temporarily to prevent passage of material or that allows movement of a fluid in one direction only 2 a: a mechanical device by which the flow of liquid, gas, or loose material in bulk may be controlled by a movable part; also: the movable part of such a device b: a device in a brass musical instrument for quickly changing the tube length in order to make the tone higher or lower 3: one of the separate pieces that make up the shell of some animals (as clams) and are often hinged 4: one of the pieces into which a ripe seed capsule or pod separates - valved /valvd/ adjective [valve illustration]