nounπShareA device that controls the flow of a gas or fluid through a pipe."The water valve needs to be turned off to prevent a leak. "technicaldevicemachineindustrypartsystemChat with AIVocabulary GamePractice Reading
nounπShareA device that admits fuel and air into the cylinder of an internal combustion engine, or one that allows combustion gases to exit."The mechanic replaced the faulty valve in the car engine. "devicemachineparttechnicalvehicleenergyfuelindustryChat with AIVocabulary GamePractice Reading
nounπShareOne or more membranous partitions, flaps, or folds, which permit the passage of the contents of a vessel or cavity in one direction, but stop or control the flow in the opposite direction"the ileocolic, mitral, and semilunar valves"partphysiologyorgananatomytechnicalmachinedevicefunctionsystembiologyscienceChat with AIVocabulary GamePractice Reading
nounπShareOne of the leaves of a folding-door, or a window-sash."The old wooden window had several worn valves that needed replacing. "architecturepartChat with AIVocabulary GamePractice Reading
nounπShareA vacuum tube."My grandfather tinkers with old radios; he says they sound better because they use valves instead of transistors. "electronicstechnologydevicemachineChat with AIVocabulary GamePractice Reading
nounπShareOne of the pieces into which certain fruits naturally separate when they dehisce."After the pea pod dried in the sun, each valve separated, releasing the peas. "fruitplantpartChat with AIVocabulary GamePractice Reading
nounπShareA small portion of certain anthers, which opens like a trapdoor to allow the pollen to escape, such as in the barberry."The barberry anther has a tiny valve that pops open, releasing pollen when a bee lands on it. "biologyplantpartChat with AIVocabulary GamePractice Reading
nounπShareOne of the pieces or divisions of bivalve or multivalve shells."The clam's shell has two valves that open and close. "animalbiologypartChat with AIVocabulary GamePractice Reading
nounπShareOne of the two similar portions of the shell of a diatom."Under the microscope, the diatom's valve showed intricate patterns. "biologyorganismpartplantscienceChat with AIVocabulary GamePractice Reading
verbπShareTo control (flow) by means of a valve."The gardener valved the water to the rose bushes, controlling how much water they received. "technicalmachinesystemdeviceChat with AIVocabulary GamePractice Reading
