Definition of "Vein" :

noun: one of the horny ribs that stiffen and support the wing of an insect

noun: a blood vessel that carries blood from the capillaries toward the heart

"All veins except the pulmonary vein carry unaerated blood."

noun: a distinctive style or manner

"He continued in this vein for several minutes."

noun: a layer of ore between layers of rock

noun: any of the vascular bundles or ribs that form the branching framework of conducting and supporting tissues in a leaf or other plant organ

verb: make a veinlike pattern