Definition of vein

Definition of vein
  1. vein Noun A blood vessel that transports blood from the capillaries back to the heart
  2. vein Noun ("used in plural" "veins") The entrails of a shrimp
  3. vein Noun In leaves, a thickened portion of the leaf containing the vascular bundle
  4. vein Noun The nervure of an insect's wing
  5. vein Noun A stripe or streak of a different colour or composition in materials such as wood, cheese, marble or other rocks
  6. vein Noun A topic of discussion
  7. vein Noun A style, tendency, or quality of something
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