Any of the small blood vessels (from 5 to 10 micrometres/micrometers (μm) in diameter) that connect arteries to veins (They are the smallest blood vessels in the body: they convey blood between the arterioles and venules).
A narrow tube.
Of or pertaining to a narrow tube.
Of, relating to, or caused by surface tension.
Of or pertaining to hair.
The arrangement of veins in a leaf, wing, or similar structure.