veins
n. countable B1 Intermediate US //ˈveɪnz// UK //vˈeɪnz// veins
n. the small tubes under your skin that carry blood back to your heart. They usually look like thin blue or purple lines on your arms and legs.
n. the tubular vessels that carry deoxygenated blood from various parts of the body back toward the heart. Often used metaphorically to describe narrow channels or streaks in materials like marble or leaves.
You can see the blue veins on the back of your hand.
The nurse looked for a strong vein in the patient's arm to draw a blood sample.
The sculptor selected a block of Carrara marble with deep grey veins that perfectly complemented the intended flow of the figure's drapery.
Usage
Usually used in the plural when referring to the circulatory system or patterns in stone.