One of the vessels which carry blood, either venous or
arterial, to the heart. See Artery, 2.

One of the similar branches of the framework of a leaf.

One of the ribs or nervures of the wings of insects. See
Venation.

A narrow mass of rock intersecting other rocks, and filling
inclined or vertical fissures not corresponding with the
stratification; a lode; a dike; – often limited, in the language of
miners, to a mineral vein or lode, that is, to a vein which contains
useful minerals or ores.

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

A streak or wave of different color, appearing in wood, and
in marble and other stones; variegation.

A train of association, thoughts, emotions, or the like; a
current; a course.

Peculiar temper or temperament; tendency or turn of mind; a
particular disposition or cast of genius; humor; strain; quality; also,
manner of speech or action; as, a rich vein of humor; a satirical vein.

To form or mark with veins; to fill or cover with veins.