What is the meaning of vein?

noun

• A blood vessel that carries blood from the capillaries toward the heart.
  • usage: "all veins except the pulmonary vein carry unaerated blood"
  • synonyms: vena, venous blood vessel
• A distinctive style or manner.
  • usage: "he continued in this vein for several minutes"
• 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
• A layer of ore between layers of rock.
  • synonyms: mineral vein
• One of the horny ribs that stiffen and support the wing of an insect.
  • synonyms: nervure

verb

• Make a veinlike pattern. .