A vein is a part of the body. It moves blood back to the heart. Veins are part of the blood system.
The doctor checked the vein in my arm.
Her veins can be seen on her hands.
A vein is a line or stripe in things like stone or wood. It can be a different color. People see veins in nature and materials.
The marble has veins of dark colors.
Look at the veins in this piece of wood.
A vein is a natural line of minerals inside rocks. People dig these veins to get metals or stones. It is important in mining.
Miners found a vein of gold in the mountain.
The vein contains valuable minerals underground.
Vein here means a special feeling or style in something. It is not a real line. It shows part of a person's way or mood.
There is a dark vein in his writing style.
The speech had a vein of sadness today.
Veins are thin lines in insect wings. These parts make the wings strong. They help the insect fly well.
The insect's veins help its wings fly.
Look at the veins in the butterfly's wing.
Veins in mining mean small layers of metal inside rocks. People dig these since they have useful metals. It is important in mining work.
The vein of copper runs through this rock.
They mined the vein for silver and gold.
