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  1. Dictionary
    vein
    /veɪn/

    noun

    More definitions, origin and scrabble points

  2. VEIN definition: 1. a tube that carries blood to the heart from the other parts of the body 2. the frame of a leaf…. Learn more.

  3. Jun 2, 2012 · The meaning of VEIN is blood vessel; especially : any of the tubular branching vessels that carry blood from the capillaries toward the heart. How to use vein in a sentence.

  4. en.wikipedia.org › wiki › VeinVein - Wikipedia

    Veins (/ v eɪ n /) are blood vessels in the circulatory system of humans and most other animals that carry blood towards the heart. Most veins carry deoxygenated blood from the tissues back to the heart; exceptions are those of the pulmonary and fetal circulations which carry oxygenated blood to the heart.

  5. Any of the blood vessels that carry blood toward the heart from the body's cells, tissues, and organs. Veins are thin-walled and contain valves that prevent the backflow of blood. All veins except the pulmonary vein carry blood with low levels of oxygen.

  6. VEIN meaning: 1. a tube that carries blood to the heart from the other parts of the body 2. the frame of a leaf…. Learn more.

  7. noun. a blood vessel that carries blood from the capillaries toward the heart. “all veins except the pulmonary vein carry unaerated blood” synonyms: vena, venous blood vessel. see more. noun. any of the vascular bundles or ribs that form the branching framework of conducting and supporting tissues in a leaf or other plant organ. synonyms: nervure.

  8. [countable] any of the very thin tubes that form the frame of a leaf or an insect’s wing. [countable] a narrow area of a different colour in some types of stone, wood and cheese. [countable] a thin layer of minerals or metal contained in rock synonym seam. a vein of gold.