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English definition of “vein”

vein

noun  /veɪn/ us  

vein noun (TUBE)

[C] biology a tube that carries blood to the heart from the other parts of the body [C] biology A vein is also any of the many small tubes in the leaves of plants that carry sap (= liquid containing a plant's food)

vein noun (LAYER)

[C] a layer of a substance in a crack in rocks or earth: a vein of iron ore

vein noun (MOOD)

[U] a style or a temporary mood: She published many novels and stories in the romantic vein then popular.
(Definition of vein from the Cambridge Academic Content Dictionary © Cambridge University Press)
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