Meaning

• A blood vessel that transports blood from the capillaries back to the heart.

• (in plural) The entrails of a shrimp.

• In leaves, a thickened portion of the leaf containing the vascular bundle.

• The nervure of an insect’s wing.

• A stripe or streak of a different colour or composition in materials such as wood, cheese, marble or other rocks.

• A topic of discussion; a train of association, thoughts, emotions, etc.

  "in the same vein"

• A style, tendency, or quality.

  "The play is in a satirical vein."

• A fissure, cleft or cavity, as in the earth or other substance.

Meaning

• To mark with veins or a vein-like pattern.