<p><strong>Noun</strong></p><ul><li>One of the system of branching vessels or tubes conveying blood from various parts of the body to the heart.</li><li>(Loosely) any blood vessel.</li><li>One of the riblike thickenings that form the framework of the wing of an insect.</li><li>One of the strands or bundles of vascular tissue forming the principal framework of a leaf.</li><li>Any body or stratum of ore, coal, etc., clearly separated or defined: a rich vein of coal.</li><li>A body or mass of igneous rock, deposited mineral, or the like occupying a crevice or fissure in rock; lode.</li><li>A natural channel or watercourse beneath the surface of the earth.</li><li>The water running through such a channel.</li><li>A streak or marking, as of a different shade or color, running through marble, wood, etc.</li><li>A condition, mood, or temper: a vein of pessimism.</li><li>A tendency, quality, or strain traceable in character, conduct, writing, etc.; manner or style: to write in a poetic vein.</li><li>Synonyms: thread, hint, touch, streak, tone.</li></ul><p><strong>Verb</strong></p><ul><li>(Used with object) to furnish with veins.</li><li>To mark with lines or streaks suggesting veins.</li><li>To extend over or through in the manner of veins: Broad new highways vein the countryside.</li></ul><p><strong>End of Response</strong></p>